JP2000280620A - Optical recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To upgrade recording and reproducing with a laser beam selected from wavelengths of a specific range by incorporating a compound having a tautomerizable structure represented by the specific formula in a recording layer. SOLUTION: A recording layer is provided on a base plate, and a compound represented by the formula is contained, wherein R1, R2, R3, R4, R5, R6, R7 and R8 are each a group having good processability by coating on a polycarbonate, aryl, epoxy or polyolefin base plate and are selectively used. Then, as a substituted or unsubstituted alkyl group, an alkyl group substituted by a substituent selected from the group consisting of a linear, branched or ring-like unsubstituted alkyl group, a halogen atom, a hydroxy group, a cyano group, a heterocyclic group and the like is used. Further, the compound represented by the formula may have a tautomerizable structure or a tautomerism. Thus, recording and reproducing with a laser having a wavelength of 400 to 500 nm can be conducted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording medium, and more particularly to a recordable optical recording medium containing a compound which can be recorded and reproduced by a blue laser beam.

[0002]

2. Description of the Related Art As an optical recording medium having a reflective layer on a substrate, a recordable CD-R (CD-Recordable) complying with the compact disk (hereinafter abbreviated as CD) standard has been widely used. The recording capacity of a CD-R is about 0.65 GB, but with the dramatic increase in the amount of information, the demand for higher density and larger capacity of information recording media is increasing.

[0003] By shortening the wavelength of a recording and reproducing laser, a beam spot can be reduced, and high-density optical recording can be performed. Recently, the development of short wavelength semiconductor lasers used in optical disk systems has been advanced,
Red semiconductor lasers of 0 nm, 650 nm and 635 nm have been put into practical use [for example, Nikkei Electronics, No. 592, p. 65, October 11, 1993]. A DVD in which a moving image of two hours or more is digitally recorded using these semiconductor lasers has been put to practical use. DV
Since D is a read-only medium, a write-once optical recording medium (DVD-R) corresponding to this capacity is also being developed.

[0004] Further, development of blue semiconductor lasers having a wavelength of 400 nm to 500 nm capable of recording at a very high density has been rapidly progressing [for example, Nikkei Electronics, N.
o. 708, p. 117, January 26, 1998 issue, Nikkei Electronics, No. 736, p. 33,199
February 8, 2009], and a write-once optical recording medium corresponding thereto has been developed.

When pits are formed by irradiating a laser beam to a recording layer of a write-once optical recording medium to cause a physical change or a chemical change in the recording layer, a pit having good optical constants and decomposition behavior of the compound is formed. It is an important factor to make it happen. Those that are difficult to decompose have reduced sensitivity, while those that are severely decomposed or are subject to change have a greater effect between pits and in the radial direction, making reliable pit formation difficult. Conventional CD-R media have a low refractive index of the recording layer at the wavelength of the blue semiconductor laser used in ultra-high density recording,
Since the extinction coefficient is not an appropriate value, good recording and recording can be achieved by lowering the reflectance, increasing the error rate, and increasing the jitter.
Cannot play. Therefore, it is necessary to select an appropriate compound having an optical property and a decomposition behavior for a blue semiconductor laser as the compound used for the recording layer. However, examples of organic dye compounds actually proposed are described in JP-A-4-74690.
Patent Application Publication No. JP-A-7-304
There are only very limited examples such as the porphyrin dye compounds described in JP-A-256 or JP-A-7-304257.

[0006]

However, since cyanine dyes generally have low light fastness, regeneration may sometimes be impossible when the medium is stored for a long period of time. The porphyrin compound described in the above publication is disclosed in
As described in the examples of JP-A-304256 or JP-A-7-304257, when the recording layer of the optical recording medium is used alone, it is impossible to write with a laser beam. It cannot be said that the compound used has sufficiently satisfactory performance. further,
In the optical recording media disclosed in the publications, it is essential to use a mixture of a single molecule or a high molecular compound having a substituent coordinating with an organic dye.
Since the recording layer may become cloudy like the sample disk described in the Example section of JP-A-57-57, the production of the medium is complicated, for example, the composition ratio needs to be set, and there is still room for improvement in productivity. Was left. For these reasons, there is an urgent need to develop a dye for an optical recording medium suitable for producing a medium having an ultra-high density recording and excellent long-term storage stability.

[0007] The object of the present invention is to provide a wavelength of 400 nm to 500 nm.
An object of the present invention is to provide an optical recording medium having, in a recording layer, a compound suitable for ultra-high-density recording capable of excellent recording and reproduction with a laser beam selected from the range of nm.

[0008]

Means for Solving the Problems The present inventors have made intensive studies to solve the above problems, and as a result, completed the present invention. That is, the present invention relates to an optical recording medium having at least a recording layer and a reflective layer on a substrate, wherein the recording layer has the general formula (1)

[0009]

Embedded image

Wherein R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ ,
R ⁷ and R ⁸ are each independently a hydrogen atom, a halogen atom,
Cyano group, substituted or unsubstituted alkyl group, aralkyl group, aryl group, alkoxy group, aralkyloxy group,
Aryloxy, alkenyl, alkenyloxy, alkylthio, aralkylthio, arylthio, alkenylthio, alkylamino, aralkylamino, arylamino, alkenylamino, acyl, alkoxycarbonyl, aralkyloxy Represents a carbonyl group, an aryloxycarbonyl group, an alkenyloxycarbonyl group, an alkylaminocarbonyl group, an aralkylaminocarbonyl group, an arylaminocarbonyl group, an alkenylaminocarbonyl group, a heterocyclic group, an alkylsulfonyl group, or an arylsulfonyl group. An optical recording medium containing a compound represented by the following,
The present invention relates to a novel optical recording medium capable of recording and reproducing with respect to a laser beam selected from a wavelength range of 400 nm to 500 nm.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete constitution of the present invention will be described below.

This optical recording medium has a four-layer structure in which a substrate 1, a recording layer 2, a reflective layer 3, and a protective layer 4 are sequentially laminated. This may be used as a single plate as shown in FIG.
As shown in FIG. 2, the bonding may be performed with an adhesive layer 5 like a DVD.

The material of the substrate is basically required to be transparent at the wavelength of the recording light and the reproducing light. For example, polymer materials such as acrylic resins such as polycarbonate resin, vinyl chloride resin and polymethyl methacrylate, polystyrene resins and epoxy resins, and inorganic materials such as glass are used.
These substrate materials are formed into a disk shape by injection molding or the like. If necessary, guide grooves or pits may be formed on the substrate surface. Such guide grooves and pits
It is desirable to apply it at the time of molding the substrate, but it can also be applied using an ultraviolet curable resin layer on the substrate.

In the present invention, a recording layer is provided on a substrate. The recording layer of the present invention contains a compound represented by the general formula (1).

The general formula (1) contained in the recording layer of the present invention
Specific examples of the compound represented by are described below in detail.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
As the group represented by R ⁶ , R ⁷ , and R ⁸ , a group having good workability by application to a polycarbonate, acrylic, epoxy, polyolefin substrate, or the like can be selected and used.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the groups represented by R ⁶ , R ⁷ , and R ⁸ include a halogen atom such as a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom, or a cyano group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkyl group represented by R ⁶ , R ⁷ , and R ⁸ include a linear, branched, or cyclic unsubstituted alkyl group, a halogen atom, a hydroxy group, a cyano group, an alkoxy group, an acyl group, and an acyloxy group. An alkoxycarbonyl group, an aryloxycarbonyl group, an aralkyloxycarbonyl group, an alkenyloxycarbonyl group, an alkoxycarbonyloxy group, a monoalkylamino group, a dialkylamino group, an acylamino group, an alkylsulfonamino group, an alkylsulfonyl group, an arylsulfonyl group, Examples include an alkyl group substituted with a substituent selected from a substituent group such as a heterocyclic group.

Examples of the substituted or unsubstituted linear, branched or cyclic alkyl group include a methyl group, an ethyl group and an n-
Propyl group, iso-propyl group, n-butyl group, is
o-butyl group, sec-butyl group, t-butyl group, n-
Pentyl group, iso-pentyl group, 2-methylbutyl group, 1-methylbutyl group, neopentyl group, 1,2-dimethylpropyl group, 1,1-dimethylpropyl group, cyclopentyl group, n-hexyl group, 4-methylpentyl group , 3-methylpentyl group, 2-methylpentyl group, 1
-Methylpentyl group, 3,3-dimethylbutyl group, 2,
3-dimethylbutyl group, 1,3-dimethylbutyl group,
2,2-dimethylbutyl group, 1,2-dimethylbutyl group, 1,1-dimethylbutyl group, 3-ethylbutyl group,
2-ethylbutyl group, 1-ethylbutyl group, 1,2,2
-Trimethylbutyl group, 1,1,2-trimethylbutyl group, 1,1,3,3-tetramethylbutyl group, 1-ethyl-2-methylpropyl group, cyclohexyl group, n-heptyl group, 2-methylhexyl Group, 3-methylhexyl group, 4-methylhexyl group, 5-methylhexyl group,
2,4-dimethylpentyl group, n-octyl group, 2-ethylhexyl group, 2,5-dimethylhexyl group, 2,
5,5-trimethylpentyl group, 2,4-dimethylhexyl group, 2,2,4-trimethylpentyl group, 3,5
5-trimethylhexyl group, n-nonyl group, n-decyl group, 4-ethyloctyl group, 4-ethyl-4,5-methylhexyl group, n-undecyl group, n-dodecyl group,
1,3,5,7-tetraethyloctyl group, 4-butyloctyl group, 6,6-diethyloctyl group, n-tridecyl group, 6-methyl-4-butyloctyl group, n-tetradecyl group, n-pentadecyl group 3,5-dimethylheptyl group, 2,6-dimethylheptyl group, 2,4-dimethylheptyl group, 2,2,5,5-tetramethylhexyl group, 1-cyclopentyl-2,2-dimethylpropyl group, An unsubstituted alkyl group having 1 to 15 carbon atoms such as a 1-cyclohexyl-2,2-dimethylpropyl group;

Chloromethyl group, chloroethyl group, bromoethyl group, iodoethyl group, dichloromethyl group, fluoromethyl group, trifluoromethyl group, pentafluoroethyl group, 2,2,2-trifluoroethyl group, 2,2,2
C1-C10 alkyl groups substituted by halogen atoms such as 2-trichloroethyl group, 1,1,1,3,3,3-hexafluoro-2-propyl group, nonafluorobutyl group and perfluorodecyl group A hydroxymethyl group, 2
-Hydroxyethyl group, 4-hydroxybutyl group, 2-
Hydroxy-3-methoxypropyl group, 2-hydroxy-3-chloropropyl group, 2-hydroxy-3-ethoxypropyl group, 3-butoxy-2-hydroxypropyl group, 2-hydroxy-3-cyclohexyloxypropyl group, 2 An alkyl group having 1 to 10 carbon atoms substituted with a hydroxy group such as -hydroxypropyl group, 2-hydroxybutyl group, 4-hydroxydecalyl-2-oxy group; hydroxymethoxymethyl group, hydroxyethoxyethyl group, 2- ( 2'-hydroxy-1'-methylethoxy)
-1-methylethyl group, 2- (3′-fluoro-2′-
An alkyl group having 2 to 10 carbon atoms substituted by a hydroxyalkoxy group such as a hydroxypropoxy) ethyl group, a 2- (3′-chloro-2′-hydroxypropoxy) ethyl group, a hydroxybutoxycyclohexyl group; a hydroxymethoxymethoxymethyl group; Hydroxyethoxyethoxyethyl group, [2 '-(2'-hydroxy-1'-methylethoxy) -1'-methylethoxy] ethoxyethyl group, [2'-(2'-fluoro-1'-hydroxyethoxy)- 1′-methylethoxy] ethoxyethyl group,
[2 ′-(2′-chloro-1′-hydroxyethoxy)
-1'-Methylethoxy] ethoxyethyl group and the like having 3 to 1 carbon atoms substituted with a hydroxyalkoxyalkoxy group.
An alkyl group of 0;

Cyanomethyl group, 2-cyanoethyl group, 4
-Cyanobutyl group, 2-cyano-3-methoxypropyl group, 2-cyano-3-chloropropyl group, 2-cyano-
Alkyl having 2 to 10 carbon atoms substituted with a cyano group such as a 3-ethoxypropyl group, a 3-butoxy-2-cyanopropyl group, a 2-cyano-3-cyclohexylpropyl group, a 2-cyanopropyl group, or a 2-cyanobutyl group. Group;

Methoxymethyl, ethoxymethyl, propoxymethyl, butoxymethyl, methoxyethyl, ethoxyethyl, propoxyethyl, butoxyethyl, n-hexyloxyethyl, (4-methylpentoxy) ethyl Group, (1,3-dimethylbutoxy)
Ethyl group, (2-ethylhexyloxy) ethyl group, n
-Octyloxyethyl group, (3,5,5-trimethylhexyloxy) ethyl group, (2-methyl-1-iso
-Propylpropoxy) ethyl group, (3-methyl-1-
iso-propylbutyloxy) ethyl group, 2-ethoxy-1-methylethyl group, 3-methoxybutyl group,
(3,3,3-trifluoropropoxy) ethyl group,
An alkyl group having 2 to 15 carbon atoms substituted with an alkoxy group such as (3,3,3-trichloropropoxy) ethyl group;

Methoxymethoxymethyl group, methoxyethoxyethyl group, ethoxyethoxyethyl group, propoxyethoxyethyl group, butoxyethoxyethyl group, cyclohexyloxyethoxyethyl group, decalyloxypropoxyethoxy group, (1,2-dimethylpropoxyethoxy) Ethyl group, (3-methyl-1-iso-butylbutoxy) ethoxyethyl group, (2-methoxy-1-methylethoxy) ethyl group, (2-butoxy-1-methylethoxy) ethyl group, 2- (2 ′ -Ethoxy-1′-methylethoxy) -1-methylethyl group, (3,3,3-trifluoropropoxy) ethoxyethyl group, (3,3
C3-C15 alkyl group substituted with alkoxyalkoxy group such as 3-trichloropropoxy) ethoxyethyl group; methoxymethoxymethoxymethyl group, methoxyethoxyethoxyethyl group, ethoxyethoxyethoxyethyl group, butoxyethoxyethoxyethyl group, cyclohexyl Oxy, propoxypropoxypropoxy group,
An alkyl group having 4 to 15 carbon atoms substituted with an alkoxyalkoxyalkoxy group such as a (2,2,2-trifluoroethoxy) ethoxyethoxyethyl group or a (2,2,2-trichloroethoxy) ethoxyethoxyethyl group;

A formylmethyl group, a 2-oxobutyl group,
3-oxobutyl group, 4-oxobutyl group, 1,3-dioxo-2-cyclohexyl group, 2-oxo-5-t-
An alkyl group having 2 to 10 carbon atoms substituted with an acyl group such as a butyl-1-cyclohexyl group; formyloxymethyl group, acetoxyethyl group, propionyloxyethyl group, butanoyloxyethyl group, valeryloxyethyl group, (2 -Ethylhexanoyloxy) ethyl group,
(3,5,5-trimethylhexanoyloxy) ethyl group, (3,5,5-trimethylhexanoyloxy) hexyl group, (3-fluorobutyryloxy) ethyl group,
An alkyl group having 2 to 15 carbon atoms substituted with an acyloxy group such as (3-chlorobutyryloxy) ethyl group;

Formyloxymethoxymethyl group, acetoxyethoxyethyl group, propionyloxyethoxyethyl group, valeryloxyethoxyethyl group, (2-ethylhexanoyloxy) ethoxyethyl group, (3,5
5-trimethylhexanoyloxy) butoxyethyl group, (3,5,5-trimethylhexanoyloxy) ethoxyethyl group, (2-fluoropropionyloxy)
Ethoxyethyl group, (2-chloropropionyloxy)
An alkyl group having 3 to 15 carbon atoms substituted with an acyloxyalkoxy group such as an ethoxyethyl group; an acetoxymethoxymethoxymethyl group, an acetoxyethoxyethoxyethyl group, a propionyloxyethoxyethoxyethyl group;
Valeryloxyethoxyethoxyethyl group, (2-ethylhexanoyloxy) ethoxyethoxyethyl group,
Carbon substituted with an acyloxyalkoxyalkoxy group such as a (3,5,5-trimethylhexanoyloxy) ethoxyethoxyethyl group, a (2-fluoropropionyloxy) ethoxyethoxyethyl group, or a (2-chloropropionyloxy) ethoxyethoxyethyl group Number 5-15
An alkyl group of methoxycarbonylmethyl group, ethoxycarbonylmethyl group, butoxycarbonylmethyl group, methoxycarbonylethyl group, ethoxycarbonylethyl group, butoxycarbonylethyl group, p-ethylcyclohexyloxycarbonylcyclohexyl group, (2,2,
A C3-C15 alkyl group substituted by an alkoxycarbonyl group such as a 3,3-tetrafluoropropoxy) carbonylmethyl group or a (2,2,3,3-tetrachloropropoxy) carbonylmethyl group; a phenoxycarbonylmethyl group; A phenoxycarbonylethyl group, (4-t-
Butylphenoxy) an alkyl group having 8 to 15 carbon atoms, which is substituted by an aryloxycarbonyl group such as carbonylethyl group, naphthyloxycarbonylmethyl group, biphenyloxycarbonylethyl group; benzyloxycarbonylmethyl group, benzyloxycarbonylethyl group, phenethyloxy An alkyl group having 9 to 15 carbon atoms substituted with an aralkyloxycarbonyl group such as a carbonylmethyl group or a (4-cyclohexyloxybenzyloxy) carbonylmethyl group;

An alkyl group having 4 to 10 carbon atoms substituted by an alkenyloxycarbonyl group such as vinyloxycarbonylmethyl group, vinyloxycarbonylethyl group, allyloxycarbonylmethyl group, octenoxycarbonylmethyl group; methoxycarbonyloxymethyl group , Methoxycarbonyloxyethyl group, ethoxycarbonyloxyethyl group, butoxycarbonyloxyethyl group,
An alkyl group having 3 to 15 carbon atoms and substituted by an alkoxycarbonyloxy group such as a (2,2,2-trifluoroethoxy) carbonyloxyethyl group or a (2,2,2-trichloroethoxy) carbonyloxyethyl group; methoxymethoxy Carbonyloxymethyl group, methoxyethoxycarbonyloxyethyl group, ethoxyethoxycarbonyloxyethyl group, butoxyethoxycarbonyloxyethyl group, (2,2,2-trifluoroethoxy) ethoxycarbonyloxyethyl group, (2,2,2- An alkyl group having 4 to 15 carbon atoms substituted by an alkoxyalkoxycarbonyloxy group such as trichloroethoxy) ethoxycarbonyloxyethyl group; a methylaminomethyl group;
Ethylaminomethyl group, n-butylaminomethyl group, n
-Hexylaminomethyl group, n-octylaminomethyl group, n-decylaminomethyl group, isoamylaminomethyl group, methoxymethylaminomethyl group, methoxyethylaminomethyl group, ethoxymethylaminomethyl group, ethoxyethylaminomethyl group, propoxy Ethylaminomethyl group, butoxyethylaminomethyl group, (2-cyclohexyloxyethyl) aminomethyl group, methylaminoethyl group, ethylaminoethyl group, n-butylaminoethyl group, n-hexylaminoethyl group, n-octylamino Ethyl group, n-decylaminoethyl group, isoamylaminoethyl group, methoxymethylaminoethyl group, methoxyethylaminoethyl group, ethoxymethylaminoethyl group, ethoxyethylaminoethyl group, propoxyethylaminoethyl group Butoxyethyl aminoethyl group,
(2-cyclohexyloxyethyl) aminoethyl group,
Methylaminopropyl group, ethylaminopropyl group, n
-Butylaminopropyl group, n-hexylaminopropyl group, n-octylaminopropyl group, n-decylaminopropyl group, isoamylaminopropyl group, methoxymethylaminopropyl group, methoxyethylaminopropyl group, ethoxymethylaminopropyl group, Ethoxyethylaminopropyl group, propoxyethylaminopropyl group, butoxyethylaminopropyl group, (2-cyclohexyloxyethyl) aminopropyl group, methylaminobutyl group, ethylaminobutyl group, n-butylaminobutyl group, n-hexylamino Butyl, n-octylaminobutyl, n-decylaminobutyl, isoamylaminobutyl, methoxymethylaminobutyl, methoxyethylaminobutyl, ethoxymethylaminobutyl, ethoxy Ruaminobuchiru group, propoxyethyl aminobutyl group, butoxyethyl aminobutyl group,
An alkyl group having 2 to 14 carbon atoms, which is substituted by a monoalkylamino group such as (2-cyclohexyloxyethyl) aminobutyl group;

Dimethylaminomethyl, diethylaminomethyl, di-n-butylaminomethyl, di-n-hexylaminomethyl, di-n-octylaminomethyl, di-n-decylaminomethyl, N- Isoamyl-
N-methylaminomethyl group, piperidinomethyl group, di (methoxymethyl) aminomethyl group, di (methoxyethyl) aminomethyl group, di (ethoxymethyl) aminomethyl group, di (ethoxyethyl) aminomethyl group, di (propoxyethyl) ) Aminomethyl group, di (butoxyethyl)
Aminomethyl group, bis (2-cyclohexyloxyethyl) aminomethyl group, dimethylaminoethyl group, diethylaminoethyl group, di-n-butylaminoethyl group, di-n-hexylaminoethyl group, di-n-octylaminoethyl Group, di-n-decylaminoethyl group, N-isoamyl-N-methylaminoethyl group, piperidinoethyl group, di (methoxymethyl) aminoethyl group, di (methoxyethyl) aminoethyl group, di (ethoxymethyl) aminoethyl Group, di (ethoxyethyl) aminoethyl group, di (propoxyethyl) aminoethyl group, di (butoxyethyl) aminoethyl group, bis (2-cyclohexyloxyethyl) aminoethyl group, dimethylaminopropyl group, diethylaminopropyl group, Di-n-butylaminopropyl group, di-n Hexyl aminopropyl group, di -
n-octylaminopropyl group, di-n-decylaminopropyl group, N-isoamyl-N-methylaminopropyl group, piperidinopropyl group, di (methoxymethyl) aminopropyl group, di (methoxyethyl) aminopropyl group Di (ethoxymethyl) aminopropyl group, di (ethoxyethyl) aminopropyl group, di (propoxyethyl) aminopropyl group, di (butoxyethyl) aminopropyl group, bis (2-cyclohexyloxyethyl) aminopropyl group, dimethyl Aminobutyl group, diethylaminobutyl group, di-n-butylaminobutyl group, di-n
-Hexylaminobutyl group, di-n-octylaminobutyl group, di-n-decylaminobutyl group, N-isoamyl-N-methylaminobutyl group, piperidinobutyl group,
Di (methoxymethyl) aminobutyl group, di (methoxyethyl) aminobutyl group, di (ethoxymethyl) aminobutyl group, di (ethoxyethyl) aminobutyl group, di (propoxyethyl) aminobutyl group, di (butoxyethyl) An alkyl group having 3 to 20 carbon atoms substituted by a dialkylamino group such as an aminobutyl group or a bis (2-cyclohexyloxyethyl) aminobutyl group;

Substitution with an acylamino group such as an acetylaminomethyl group, an acetylaminoethyl group, a propionylaminoethyl group, a butanoylaminoethyl group, a cyclohexanecarbonylaminoethyl group, a p-methylcyclohexanecarbonylaminoethyl group, and a succiniminoethyl group. An alkyl group having 3 to 10 carbon atoms; the number of carbon atoms substituted by an alkylsulfonamino group such as a methylsulfonaminomethyl group, a methylsulfonaminoethyl group, an ethylsulfonaminoethyl group, a propylsulfonaminoethyl group, and an octylsulfonaminoethyl group. 2 to 10 alkyl groups; methylsulfonylmethyl group, ethylsulfonylmethyl group, butylsulfonylmethyl group, methylsulfonylethyl group, ethylsulfonylethyl group, butylsulfonylethyl group, (2- 2 carbon atoms substituted by an alkylsulfonyl group such as a tylhexyl) sulfonylethyl group, a (2,2,3,3-tetrafluoropropyl) sulfonylmethyl group, a (2,2,3,3-tetrachloropropyl) sulfonylmethyl group Alkyl groups of 10 to 10; benzenesulfonylmethyl group, benzenesulfonylethyl group, benzenesulfonylpropyl group, benzenesulfonylbutyl group, toluenesulfonylmethyl group, toluenesulfonylethyl group, toluenesulfonylpropyl group, toluenesulfonylbutyl group, xylenesulfonylmethyl group An alkyl group having 7 to 12 carbon atoms substituted with an arylsulfonyl group such as a xylenesulfonylethyl group, a xylenesulfonylpropyl group, or a xylenesulfonylbutyl group; a thiadiazolinomethyl group, a pyrrolinomethyl group, Heterocyclic groups such as loridinomethyl group, pyrazolidinomethyl group, imidazolidinomethyl group, oxazolyl group, triazolinomethyl group, morpholinomethyl group, indolinomethyl group, benzimidazolinomethyl group and carbazolinomethyl group Examples thereof include a substituted alkyl group having 2 to 13 carbon atoms.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aralkyl groups represented by R ⁶ , R ⁷ and R ⁸ are aralkyl groups having the same substituents as the above-mentioned alkyl groups, and are preferably a benzyl group or a nitrobenzyl group. , Cyanobenzyl group, hydroxybenzyl group, methylbenzyl group, trifluoromethylbenzyl group, naphthylmethyl group, nitronaphthylmethyl group, cyanonaphthylmethyl group, hydroxynaphthylmethyl group, methylnaphthylmethyl group, trifluoromethylnaphthylmethyl group, Examples thereof include an aralkyl group having 7 to 15 carbon atoms such as a fluoren-9-ylethyl group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aryl groups represented by R ⁶ , R ⁷ , and R ⁸ are aryl groups having the same substituents as the above-described alkyl groups, and are preferably a phenyl group or a nitrophenyl group. , Cyanophenyl, hydroxyphenyl, methylphenyl, trifluoromethylphenyl, naphthyl, nitronaphthyl, cyanonaphthyl, hydroxynaphthyl, methylnaphthyl, trifluoromethylnaphthyl, methoxycarbonylphenyl, 4 -(5'-methylbenzoxazole-2'-
Yl) aryl groups having 6 to 15 carbon atoms such as phenyl group and dibutylaminocarbonylphenyl group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkenyl groups represented by R ⁶ , R ⁷ and R ⁸ are alkenyl groups having the same substituents as the above-mentioned alkyl groups, and are preferably a vinyl group, a propenyl group, 1-butenyl group, iso-butenyl group, 1-pentenyl group, 2-pentenyl group, 2-methyl-1-butenyl group, 3-methyl-1-butenyl group, 2-
A methyl-2-butenyl group, a 2,2-dicyanovinyl group,
2-cyano-2-methylcarboxylvinyl group, 2-cyano-2-methylsulfonevinyl group, styryl group, 4-
An alkenyl group having 2 to 10 carbon atoms such as a phenyl-2-butenyl group is exemplified.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkoxy groups represented by R ⁶ , R ⁷ and R ⁸ include a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, an isobutoxy group and a tert-butoxy group. , Sec-butoxy group, n-pentyloxy group, isopentyloxy group, t
ert-pentyloxy group, sec-pentyloxy group, cyclopentyloxy group, n-hexyloxy group,
1-methylpentyloxy group, 2-methylpentyloxy group, 3-methylpentyloxy group, 4-methylpentyloxy group, 1,1-dimethylbutoxy group, 1,2-dimethylbutoxy group, 1,3-dimethylbutoxy Group, 2,
3-dimethylbutoxy group, 1,1,2-trimethylpropoxy group, 1,2,2-trimethylpropoxy group, 1-
Ethyl butoxy group, 2-ethyl butoxy group, 1-ethyl-2-methylpropoxy group, cyclohexyloxy group,
Methylcyclopentyloxy group, n-heptyloxy group, 1-methylhexyloxy group, 2-methylhexyloxy group, 3-methylhexyloxy group, 4-methylhexyloxy group, 5-methylhexyloxy group, 1,1
-Dimethylpentyloxy group, 1,2-dimethylpentyloxy group, 1,3-dimethylpentyloxy group, 1,
4-dimethylpentyloxy group, 2,2-dimethylpentyloxy group, 2,3-dimethylpentyloxy group,
2,4-dimethylpentyloxy group, 3,3-dimethylpentyloxy group, 3,4-dimethylpentyloxy group, 1-ethylpentyloxy group, 2-ethylpentyloxy group, 3-ethylpentyloxy group, 1,2-
Trimethylbutoxy group, 1,1,3-trimethylbutoxy group, 1,2,3-trimethylbutoxy group, 1,2,2
-Trimethylbutoxy group, 1,3,3-trimethylbutoxy group, 2,3,3-trimethylbutoxy group, 1-ethyl-1-methylbutoxy group, 1-ethyl-2-methylbutoxy group, 1-ethyl-3 -Methylbutoxy group, 2-ethyl-1-methylbutoxy group, 2-ethyl-3-methylbutoxy group, 1-n-propylbutoxy group, 1-isopropylbutoxy group, 1-isopropyl-2-methylpropoxy group, methyl Cyclohexyloxy group, n-octyloxy group, 1-methylheptyloxy group, 2-methylheptyloxy group, 3-methylheptyloxy group, 4-
Methylheptyloxy group, 5-methylheptyloxy group, 6-methylheptyloxy group, 1,1-dimethylhexyloxy group, 1,2-dimethylhexyloxy group,
1,3-dimethylhexyloxy group, 1,4-dimethylhexyloxy group, 1,5-dimethylhexyloxy group, 2,2-dimethylhexyloxy group, 2,3-dimethylhexyloxy group, 2,4-dimethyl Hexyloxy group, 2,5-dimethylhexyloxy group, 3,3-dimethylhexyloxy group, 3,4-dimethylhexyloxy group, 3,5-dimethylhexyloxy group, 4,4-
Dimethylhexyloxy group, 4,5-dimethylhexyloxy group, 1-ethylhexyloxy group, 2-ethylhexyloxy group, 3-ethylhexyloxy group, 4-ethylhexyloxy group, 1-n-propylpentyloxy group, 2-n -Propylpentyloxy group, 1-isopropylpentyloxy group, 2-isopropylpentyloxy group, 1-ethyl-1-methylpentyloxy group, 1
-Ethyl-2-methylpentyloxy group, 1-ethyl-
3-methylpentyloxy group, 1-ethyl-4-methylpentyloxy group, 2-ethyl-1-methylpentyloxy group, 2-ethyl-2-methylpentyloxy group, 2
-Ethyl-3-methylpentyloxy group, 2-ethyl-
4-methylpentyloxy group, 3-ethyl-1-methylpentyloxy group, 3-ethyl-2-methylpentyloxy group, 3-ethyl-3-methylpentyloxy group, 3
-Ethyl-4-methylpentyloxy group, 1,1,2-
Trimethylpentyloxy group, 1,1,3-trimethylpentyloxy group, 1,1,4-trimethylpentyloxy group, 1,2,2-trimethylpentyloxy group,
1,2,3-trimethylpentyloxy group, 1,2,4
A trimethylpentyloxy group, a 1,3,4-trimethylpentyloxy group, a 2,2,3-trimethylpentyloxy group, a 2,2,4-trimethylpentyloxy group,
2,3,4-trimethylpentyloxy group, 1,3,3
-A trimethylpentyloxy group, a 2,3,3-trimethylpentyloxy group, a 3,3,4-trimethylpentyloxy group, a 1,4,4-trimethylpentyloxy group,
2,4,4-trimethylpentyloxy group, 3,4,4
-Trimethylpentyloxy group, 1-n-butylbutoxy group, 1-isobutylbutoxy group, 1-sec-butylbutoxy group, 1-tert-butylbutoxy group, 2-t
tert-butylbutoxy group, 1-n-propyl-1-methylbutoxy group, 1-n-propyl-2-methylbutoxy group, 1-n-propyl-3-methylbutoxy group, 1-
Isopropyl-1-methylbutoxy group, 1-isopropyl-2-methylbutoxy group, 1-isopropyl-3-methylbutoxy group, 1,1-diethylbutoxy group, 1,2
-Diethylbutoxy group, 1-ethyl-1,2-dimethylbutoxy group, 1-ethyl-1,3-dimethylbutoxy group, 1-ethyl-2,3-dimethylbutoxy group, 2-ethyl-1,1-dimethyl Butoxy group, 2-ethyl-1,
2-dimethylbutoxy group, 2-ethyl-1,3-dimethylbutoxy group, 2-ethyl-2,3-dimethylbutoxy group, 1,1,3,3-tetramethylbutoxy group, 1,2
-Dimethylcyclohexyloxy group, 1,3-dimethylcyclohexyloxy group, 1,4-dimethylcyclohexyloxy group, ethylcyclohexyloxy group, n-nonyloxy group, 3,5,5-trimethylhexyloxy group, n-decyloxy group, n-undecyloxy group, n
-Dodecyloxy group, 1-adamantyloxy group, n-
A linear, branched or cyclic unsubstituted alkoxy group having 1 to 15 carbon atoms such as a pentadecanyloxy group;

A methoxymethoxy group, a methoxyethoxy group, an ethoxyethoxy group, an n-propoxyethoxy group,
Isopropoxyethoxy group, n-butoxyethoxy group,
Isobutoxyethoxy group, tert-butoxyethoxy group, sec-butoxyethoxy group, n-pentyloxyethoxy group, isopentyloxyethoxy group, tert
-Pentyloxyethoxy group, sec-pentyloxyethoxy group, cyclopentyloxyethoxy group, n-hexyloxyethoxy group, ethylcyclohexyloxyethoxy group, n-nonyloxyethoxy group, (3,5,
5-trimethylhexyloxy) ethoxy group, (3,
5,5-trimethylhexyloxy) butoxy group, n-
Decyloxyethoxy group, n-undecyloxyethoxy group, n-dodecyloxyethoxy group, 3-methoxypropoxy group, 3-ethoxypropoxy group, 3- (n-propoxy) propoxy group, 2-isopropoxypropoxy group, 2 A C2-C2-substituted alkoxy group such as a methoxybutoxy group, a 2-ethoxybutoxy group, a 2- (n-propoxy) butoxy group, a 4-isopropoxybutoxy group, a decalyloxyethoxy group, or an adamantyloxyethoxy group; 15 alkoxy groups;

Methoxymethoxymethoxy, ethoxymethoxymethoxy, propoxymethoxymethoxy, butoxymethoxymethoxy, methoxyethoxymethoxy, ethoxyethoxymethoxy, propoxyethoxymethoxy, butoxyethoxymethoxy, methoxypropoxymethoxy, ethoxypropoxy Methoxy group,
Propoxypropoxymethoxy group, butoxypropoxymethoxy group, methoxybutoxymethoxy group, ethoxybutoxymethoxy group, propoxybutoxymethoxy group, butoxybutoxymethoxy group, methoxymethoxyethoxy group, ethoxymethoxyethoxy group, propoxymethoxyethoxy group, butoxymethoxyethoxy group, Methoxyethoxyethoxy, ethoxyethoxyethoxy, propoxyethoxyethoxy, butoxyethoxyethoxy, methoxypropoxyethoxy, ethoxypropoxyethoxy, propoxypropoxyethoxy, butoxypropoxyethoxy, methoxybutoxyethoxy, methoxybutoxyethoxy, methoxybutoxyethoxy Propoxybutoxyethoxy, butoxybutoxyethoxy, methoxymethoxypropoxy , Ethoxy methoxypropoxy group,
Propoxymethoxypropoxy, butoxymethoxypropoxy, methoxyethoxypropoxy, ethoxyethoxypropoxy, propoxyethoxypropoxy, butoxyethoxypropoxy, methoxypropoxypropoxy, ethoxypropoxypropoxy, propoxypropoxy, butoxypropoxy, butoxypropoxy Methoxybutoxypropoxy group, ethoxybutoxypropoxy group, propoxybutoxypropoxy group, butoxybutoxypropoxy group, methoxymethoxybutoxy group, ethoxymethoxybutoxy group, propoxymethoxybutoxy group, butoxymethoxybutoxy group,
Methoxyethoxybutoxy, ethoxyethoxybutoxy, propoxycyethoxybutoxy, butoxyethoxybutoxy, methoxypropoxybutoxy, ethoxypropoxybutoxy, propoxypropoxybutoxy, butoxypropoxybutoxy, methoxybutoxybutoxy, methoxybutoxybutoxy , Propoxybutoxybutoxy, butoxybutoxybutoxy, (4-ethylcyclohexyloxy) ethoxyethoxy, (2-ethyl-1-hexyloxy) ethoxypropoxy, 4- (3,5,5-trimethylhexyloxy) butoxy A linear, branched or cyclic C3-C15 substituted with an alkoxyalkoxy group such as an ethoxy group.
An alkoxy group;

Methoxycarbonylmethoxy, ethoxycarbonylmethoxy, n-propoxycarbonylmethoxy, isopropoxycarbonylmethoxy, 4'-
An alkoxy group having 3 to 10 carbon atoms substituted by an alkoxycarbonyl group such as ethylcyclohexyloxycarbonylmethoxy group; an alkoxy group having 3 to 10 carbon atoms substituted by an acyl group such as acetylmethoxy group, ethylcarbonylmethoxy group, octylcarbonylmethoxy group A group having 3 carbon atoms substituted by an acyloxy group such as an acetyloxymethoxy group, an acetyloxyethoxy group, an acetyloxyhexyloxy group, a butanoyloxycyclohexyloxy group;
10 to 10 alkoxy groups;

Methylaminomethoxy, 2-methylaminoethoxy, 2- (2-methylaminoethoxy) ethoxy, 4-methylaminobutoxy, 1-methylaminopropan-2-yloxy, 3-methylaminopropoxy Group, 2-methylamino-2-methylpropoxy group, 2-ethylaminoethoxy group, 2- (2-ethylaminoethoxy) ethoxy group, 3-ethylaminopropoxy group, 1-ethylaminopropoxy group, 2-isopropylamino Ethoxy group, 2- (n-butylamino) ethoxy group, 3- (n-hexylamino) propoxy group, 4-
(Cyclohexylamino) alkoxy group having 2 to 10 carbon atoms substituted by alkylamino group such as butyloxy group; methylaminomethoxymethoxy group, methylaminoethoxyethoxy group, methylaminoethoxypropoxy group, ethylaminoethoxypropoxy group, 4- ( An alkoxy group having 3 to 10 carbon atoms substituted with an alkylaminoalkoxy group such as 2′-isobutylaminopropoxy) butoxy group;
Dimethylaminomethoxy group, 2-dimethylaminoethoxy group, 2- (2-dimethylaminoethoxy) ethoxy group, 4-dimethylaminobutoxy group, 1-dimethylaminopropan-2-yloxy group, 3-dimethylaminopropoxy group, 2 -Dimethylamino-2-methylpropoxy group, 2-diethylaminoethoxy group, 2- (2-diethylaminoethoxy) ethoxy group, 3-diethylaminopropoxy group, 1-diethylaminopropoxy group, 2-
Diisopropylaminoethoxy group, 2- (di-n-butylamino) ethoxy group, 2-piperidylethoxy group, 3
An alkoxy group having 3 to 15 carbon atoms, which is substituted with a dialkylamino group such as-(di-n-hexylamino) propoxy group;

C 4 carbon atoms substituted with a dialkylaminoalkoxy group such as dimethylaminomethoxymethoxy, dimethylaminoethoxyethoxy, dimethylaminoethoxypropoxy, diethylaminoethoxypropoxy, 4- (2′-diisobutylaminopropoxy) butoxy, etc. To 15 alkoxy groups; 2-methylthiomethoxy group, 2-methylthioethoxy group, 2-ethylthioethoxy group, 2-n-propylthioethoxy group, 2-isopropylthioethoxy group, 2-n-butylthioethoxy group,
An alkoxy group having 2 to 15 carbon atoms substituted by an alkylthio group such as a 2-isobutylthioethoxy group and a (3,5,5-trimethylhexylthio) hexyloxy group; and the like, preferably a methoxy group and an ethoxy group , N-propoxy group, iso-propoxy group, n-butoxy group, i
so-butoxy group, sec-butoxy group, t-butoxy group, n-pentoxy group, iso-pentoxy group, neopentoxy group, 2-methylbutoxy group, 2-ethylhexyloxy group, 3,5,5-trimethylhexyloxy group And an alkoxy group having 1 to 10 carbon atoms such as a decalyloxy group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aralkyloxy groups represented by R ⁶ , R ⁷ , and R ⁸ are aralkyloxy groups having the same substituents as the above-mentioned alkyl groups, preferably a benzyloxy group, Nitrobenzyloxy group, cyanobenzyloxy group, hydroxybenzyloxy group,
Methylbenzyloxy group, trifluoromethylbenzyloxy group, naphthylmethoxy group, nitronaphthylmethoxy group, cyanonaphthylmethoxy group, hydroxynaphthylmethoxy group, methylnaphthylmethoxy group, trifluoromethylnaphthylmethoxy group, fluoren-9-ylethoxy group, etc. And an aralkyloxy group having 7 to 15 carbon atoms.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aryloxy groups represented by R ⁶ , R ⁷ , and R ⁸ are aryloxy groups having the same substituents as the above-mentioned alkyl groups, and are preferably phenoxy groups, And aryloxy groups having 6 to 10 carbon atoms such as -methylphenoxy group, 4-methylphenoxy group, 4-t-butylphenoxy group, 2-methoxyphenoxy group, 4-iso-propylphenoxy group, and naphthoxy group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkenyloxy groups represented by R ⁶ , R ⁷ and R ⁸ are alkenyloxy groups having the same substituents as the above-mentioned alkyl groups, and are preferably a vinyloxy group or a propenyl group. Oxy group, 1-butenyloxy group, iso-butenyloxy group, 1-pentenyloxy group, 2-pentenyloxy group, 2-methyl-
1-butenyloxy group, 3-methyl-1-butenyloxy group, 2-methyl-2-butenyloxy group, 2,2-dicyanovinyloxy group, 2-cyano-2-methylcarboxylvinyloxy group, 2-cyano-2- Methylsulfone vinyloxy group, styryloxy group, 4-phenyl-
An alkenyloxy group having 2 to 10 carbon atoms such as a 2-butenyloxy group and a cinnamyloxy group is exemplified.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkylthio groups represented by R ⁶ , R ⁷ and R ⁸ are alkylthio groups having the same substituents as the above-mentioned alkyl groups, and are preferably methylthio groups, ethylthio groups, n-propylthio group, is
o-propylthio group, n-butylthio group, iso-butylthio group, sec-butylthio group, t-butylthio group,
n-pentylthio group, iso-pentylthio group, neopentylthio group, 2-methylbutylthio group, methylcarboxylethylthio group, 2-ethylhexylthio group, 3,
Examples thereof include an alkylthio group having 1 to 10 carbon atoms such as a 5,5-trimethylhexylthio group and a decalylthio group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aralkylthio groups represented by R ⁶ , R ⁷ and R ⁸ are the aralkylthio groups having the same substituents as the above-mentioned alkyl groups, and are preferably a benzylthio group or a nitrothio group. Benzylthio, cyanobenzylthio, hydroxybenzylthio, methylbenzylthio, trifluoromethylbenzylthio, naphthylmethylthio, nitronaphthylmethylthio, cyanonaphthylmethylthio, hydroxynaphthylmethylthio, methylnaphthylmethylthio, Examples thereof include an aralkylthio group having 7 to 12 carbon atoms such as a trifluoromethylnaphthylmethylthio group and a fluoren-9-ylethylthio group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted arylthio groups represented by R ⁶ , R ⁷ and R ⁸ are arylthio groups having the same substituents as the above-mentioned alkyl groups, and are preferably a phenylthio group, 4-methylphenyl Examples thereof include an arylthio group having 6 to 10 carbon atoms such as a thio group, a 2-methoxyphenylthio group, a 4-t-butylphenylthio group, and a naphthylthio group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkenylthio groups represented by R ⁶ , R ⁷ and R ⁸ are alkenylthio groups having the same substituents as the above-mentioned alkyl groups, and preferably
Examples thereof include an alkenylthio group having 2 to 10 carbon atoms such as a vinylthio group, an allylthio group, a butenylthio group, a hexanedienylthio group, a styrylthio group, a cyclohexenylthio group, and a decenylthio group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkylamino group represented by R ⁶ , R ⁷ , and R ⁸ include an alkylamino group having the same substituent as the above-described alkyl group, preferably a methylamino group, Ethylamino group, propylamino group, butylamino group, pentylamino group, hexylamino group, heptylamino group, octylamino group, 2-ethylhexylamino group, cyclohexylamino group, 3,
A monoalkylamino group having 1 to 10 carbon atoms such as a 5,5-trimethylhexylamino group, a nonylamino group, a decylamino group, a dimethylamino group, a diethylamino group,
Methylethylamino, dipropylamino, dibutylamino, pyrrolidino, piperidino, morpholino, bis (methoxyethyl) amino, bis (ethoxyethyl) amino, bis (propoxyethyl) amino, bis (butoxy) Examples thereof include dialkylamino groups having 2 to 10 carbon atoms such as an ethyl) amino group, a di (acetyloxyethyl) amino group, and a di (propionyloxyethyl) amino group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aralkylamino groups represented by R ⁶ , R ⁷ , and R ⁸ are aralkylamino groups having the same substituents as the above-mentioned alkyl groups, preferably a benzylamino group, Phenethylamino group, 3-phenylpropylamino group, 4-ethylbenzylamino group, 4-isopropylbenzylamino group, N-methylbenzylamino group, N-ethylbenzylamino group, N-allylbenzylamino group, N- (2 A monoaralkylamino group having 7 to 10 carbon atoms, such as -cyanoethyl) benzylamino group, N- (2-acetoxyethyl) benzylamino group, dibenzylamino group, diphenethylamino group, bis (4-ethylbenzyl) amino , A diaralkylamino having 14 to 20 carbon atoms such as a bis (4-isopropylbenzyl) amino group And the like.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted arylamino groups represented by R ⁶ , R ⁷ and R ⁸ are arylamino groups having the same substituents as the above-mentioned alkyl groups, preferably an anilino group and naphthyl Amino group, toluidino group, xylidino group, ethylanilino group, isopropylanilino group, methoxyanilino group, ethoxyanilino group, chloroanilino group, acetylanilino group, methoxycarbonylanilino group, ethoxycarbonylanilino group, propoxycarbonylani Lino group, N-methylanilino group, N-
Examples thereof include diarylamino groups having 12 to 14 carbon atoms such as a monoarylamino group having 6 to 10 carbon atoms such as an ethylanilino group and an N-methyltoluidino group, diphenylamino group, ditolylamino group, and N-phenyl-N-tolylamino group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkenylamino group represented by R ⁶ , R ⁷ , and R ⁸ are alkenylamino groups having the same substituents as the alkyl groups described above, and are preferably a vinylamino group, Allylamino group, butenylamino group, pentenylamino group, hexenylamino group, cyclohexenylamino group, octadienylamino group, adamantenylamino group, N-methylvinylamino group, N-
Methylallylamino group, N-ethylvinylamino group, N
A monoalkenylamino group having 2 to 10 carbon atoms such as an ethylallylamino group, a dialkenylamino group having 4 to 12 carbon atoms such as a divinylamino group, a diallylamino group, a dibutenylamino group, a dipentenylamino group, and a dihexenylamino group; Is mentioned.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted acyl groups represented by R ⁶ , R ⁷ and R ⁸ are acyl groups having the same substituents as the above-mentioned alkyl groups, and are preferably a formyl group, a methylcarbonyl group , Ethylcarbonyl group, n-propylcarbonyl group, iso-propylcarbonyl group, n-butylcarbonyl group, iso-butylcarbonyl group, se
c-butylcarbonyl group, t-butylcarbonyl group, n
-Pentylcarbonyl group, iso-pentylcarbonyl group, neopentylcarbonyl group, 2-methylbutylcarbonyl group, benzoyl group, methylbenzoyl group, ethylbenzoyl group, tolylcarbonyl group, propylbenzoyl group, 4-t-butylbenzoyl group, An acyl group having 1 to 15 carbon atoms such as a nitrobenzylcarbonyl group, a 3-butoxy-2-naphthoyl group, and a cinnamoyl group is exemplified.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkoxycarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are alkoxycarbonyl groups having the same substituents as the above-mentioned alkyl groups, preferably methoxycarbonyl groups and ethoxy groups. Carbonyl group, n-propoxycarbonyl group, iso-propoxycarbonyl group, n-butoxycarbonyl group, iso
-Butoxycarbonyl group, sec-butoxycarbonyl group, t-butoxycarbonyl group, n-pentoxycarbonyl group, iso-pentoxycarbonyl group, neopentoxycarbonyl group, 2-pentoxycarbonyl group, 2-
Carbon number 2 such as ethylhexyloxycarbonyl group, 3,5,5-trimethylhexyloxycarbonyl group, decalyloxycarbonyl group, cyclohexyloxycarbonyl group, chloroethoxycarbonyl group, hydroxymethoxycarbonyl group, hydroxyethoxycarbonyl group, etc.
To 11 alkoxycarbonyl groups; methoxymethoxycarbonyl group, methoxyethoxycarbonyl group, ethoxyethoxycarbonyl group, propoxyethoxycarbonyl group, butoxyethoxycarbonyl group, pentoxyethoxycarbonyl group, hexyloxyethoxycarbonyl group, butoxybutoxycarbonyl group, hexyl An alkoxycarbonyl group having 3 to 11 carbon atoms substituted by an alkoxy group such as an oxybutoxycarbonyl group, a hydroxymethoxymethoxycarbonyl group, or a hydroxyethoxyethoxycarbonyl group; a methoxymethoxymethoxycarbonyl group, a methoxyethoxyethoxycarbonyl group, an ethoxyethoxyethoxycarbonyl group , Propoxyethoxyethoxycarbonyl, butoxyethoxyethoxycarbonyl, pentoxy Butoxy ethoxycarbonyl group, alkoxyalkoxy groups such as hexyloxy ethoxyethoxy group is an alkoxycarbonyl group having a carbon number of 4-11 substituted.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aralkyloxycarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are aralkyloxycarbonyl groups having the same substituents as the above-mentioned alkyl groups, and preferably benzyloxy Carbonyl, nitrobenzyloxycarbonyl, cyanobenzyloxycarbonyl, hydroxybenzyloxycarbonyl, methylbenzyloxycarbonyl, trifluoromethylbenzyloxycarbonyl, naphthylmethoxycarbonyl, nitronaphthylmethoxycarbonyl, cyanonaphthylmethoxycarbonyl Charcoal, such as a hydroxynaphthylmethoxycarbonyl group, a methylnaphthylmethoxycarbonyl group, a trifluoromethylnaphthylmethoxycarbonyl group, a fluoren-9-ylethoxycarbonyl group, Number 8-16 aralkyloxycarbonyl groups such like.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aryloxycarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are aryloxycarbonyl groups having the same substituents as the above-mentioned aryl groups, and preferably phenoxycarbonyl Group, 2-
Methylphenoxycarbonyl group, 4-methylphenoxycarbonyl group, 4-t-butylphenoxycarbonyl group, 2-methoxyphenoxycarbonyl group, 4-iso
And an aryloxycarbonyl group having 7 to 11 carbon atoms such as -propylphenoxycarbonyl group and naphthoxycarbonyl group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkenyloxycarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are alkenyloxycarbonyl groups having the same substituents as the above-mentioned alkyl groups, and are preferably vinyloxy Carbonyl group, propenyloxycarbonyl group, 1-butenyloxycarbonyl group, iso-butenyloxycarbonyl group, 1-pentenyloxycarbonyl group, 2-pentenyloxycarbonyl group, 2-methyl-1-butenyloxycarbonyl group, 3-methyl-1-butenyloxycarbonyl group, 2-methyl-2-butenyloxycarbonyl group, 2,2-dicyanovinyloxycarbonyl group, 2-
A carbon number of 3 to 3 such as a cyano-2-methylcarboxylvinyloxycarbonyl group, a 2-cyano-2-methylsulfonevinyloxycarbonyl group, a styryloxycarbonyl group, and a 4-phenyl-2-butenyloxycarbonyl group;
And 11 alkenyloxycarbonyl groups.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkylaminocarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are alkylaminocarbonyl groups having the same substituents as the above-mentioned alkyl groups, preferably methylaminocarbonyl Group, ethylaminocarbonyl group, propylaminocarbonyl group,
Butylaminocarbonyl group, pentylaminocarbonyl group, hexylaminocarbonyl group, heptylaminocarbonyl group, octylaminocarbonyl group, nonylaminocarbonyl group, 3,5,5-trimethylhexylaminocarbonyl group, 2-ethylhexylaminocarbonyl group, etc. Monoalkylaminocarbonyl group having 2 to 10 carbon atoms; dimethylaminocarbonyl group, diethylaminocarbonyl group, dipropylaminocarbonyl group, dibutylaminocarbonyl group, dipentylaminocarbonyl group, dihexylaminocarbonyl group, diheptylaminocarbonyl group, dioctylamino 3 to 2 carbon atoms such as a carbonyl group, a piperidinocarbonyl group, a morpholinocarbonyl group, a 4-methylpiperazinocarbonyl group, and a 4-ethylpiperazinocarbonyl group. Include dialkylaminocarbonyl groups of.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted aralkylaminocarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are aralkylaminocarbonyl groups having the same substituents as the above-mentioned alkyl groups, and preferably benzylamino Carbonyl group, phenethylaminocarbonyl group, 3-phenylpropylaminocarbonyl group, 4-ethylbenzylaminocarbonyl group, 4-isopropylbenzylaminocarbonyl group, N-methylbenzylaminocarbonyl group, N-ethylbenzylaminocarbonyl group, N- Allylbenzylaminocarbonyl group, N- (2-cyanoethyl) benzylaminocarbonyl group, N- (2-acetoxyethyl)
A monoaralkylaminocarbonyl group having 8 to 11 carbon atoms such as a benzylaminocarbonyl group, a dibenzylaminocarbonyl group, a diphenethylaminocarbonyl group, a bis (4-ethylbenzyl) aminocarbonyl group, a bis (4
Diisopropylaminocarbonyl group having 15 to 21 carbon atoms such as -isopropylbenzyl) aminocarbonyl group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted arylaminocarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are arylaminocarbonyl groups having the same substituents as the above-mentioned alkyl groups. Carbonyl group, naphthylaminocarbonyl group, toluidinocarbonyl group, xylidinocarbonyl group, ethylanilinocarbonyl group, isopropylanilinocarbonyl group, methoxyanilinocarbonyl group, ethoxyanilinocarbonyl group, chloroanilinocarbonyl group, acetyl Anilino carbonyl group,
A methoxycarbonylanilinocarbonyl group, an ethoxycarbonylanilinocarbonyl group, a propoxycarbonylanilinocarbonyl group, an N-methylanilinocarbonyl group, an N-ethylanilinocarbonyl group, an N-methyltoluidinocarbonyl group; To 11 monoarylaminocarbonyl group, diphenylaminocarbonyl group, ditolylaminocarbonyl group, N-phenyl-N-
A diarylaminocarbonyl group having 13 to 15 carbon atoms such as a tolylaminocarbonyl group is exemplified.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkenylaminocarbonyl groups represented by R ⁶ , R ⁷ and R ⁸ are alkenylaminocarbonyl groups having the same substituents as the above-mentioned alkyl groups, and are preferably vinylamino Carbonyl group, allylaminocarbonyl group, butenylaminocarbonyl group, pentenylaminocarbonyl group, hexenylaminocarbonyl group, cyclohexenylaminocarbonyl group, octadienylaminocarbonyl group, adamantenylaminocarbonyl group, N-methylvinylaminocarbonyl group C3-11 monoalkenylaminocarbonyl groups such as N-methylallylaminocarbonyl group, N-ethylvinylaminocarbonyl group, N-ethylvinylaminocarbonyl group, divinylaminocarbonyl group, diallylaminocarb Group, jib pantothenyl aminocarbonyl group, di-pentenyl aminocarbonyl groups include dialkenylamino aminocarbonyl group 5-13 carbon atoms such as di-hexenyl aminocarbonyl group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted heterocyclic group represented by R ⁶ , R ⁷ , and R ⁸ include a heterocyclic group having the same substituent as the above-mentioned alkyl group, preferably a furanyl group, a pyrrolyl group. Group, 3-pyrrolino group, pyrrolidino group, 1,3-oxolanyl group, pyrazolyl group, 2-pyrazolinyl group, pyrazolidinyl group, imidazolyl group, oxazolyl group, thiazolyl group, 1,2,3-oxadiazolyl group, 1,
2,3-triazolyl group, 1,2,4-triazolyl group, 1,3,4-thiadiazolyl group, 4H-pyranyl group, pyridinyl group, piperidinyl group, dioxanyl group,
Morpholinyl group, pyridazinyl group, pyrimidinyl group, pyrazinyl group, piperazinyl group, triazinyl group, benzofuranyl group, indoleyl group, thionaphthenyl group, benzimidazolyl group, benzothiazolyl group, purinyl group,
Quinolinyl group, isoquinolinyl group, coumarinyl group, cinnolinyl group, quinoxalinyl group, dibenzofuranyl group,
Carbazolyl group, phenanthronylyl group, phenothiazinyl group, flavonyl group, phthalimido group, unsubstituted heterocyclic group such as naphthylimido group, or the following substituents:

Halogen atoms such as fluorine, chlorine, bromine and iodine; cyano; methyl, ethyl, propyl, butyl, pentyl, hexyl,
Alkyl groups such as heptyl group, octyl group, decyl group, methoxymethyl group, ethoxyethyl group, ethoxyethyl group and trifluoromethyl group; aralkyl groups such as benzyl group and phenethyl group; phenyl group, tolyl group, naphthyl group and xylyl Aryl groups such as methoxy, ethoxy, propoxy, butoxy, pentoxy, hexyloxy, heptyloxy, octyloxy, nonyloxy, decyloxy, 2 Alkoxy groups such as -ethylhexyl group and 3,5,5-trimethylhexyloxy group; aralkyloxy groups such as benzyloxy group and phenethyloxy group; phenoxy group, tolyloxy group, naphthoxy group, xyloxy group, mesyloxy group, and chlorophenoxy group , Aryloxy groups such as Kishifenokishi group; vinyl group, allyl group, butenyl group, butadienyl group, pentenyl group, alkenyl groups such as octenyl group; vinyloxy group, allyloxy group, butenyloxy group, butadienyl group, pentenyl group,
Alkenyloxy groups such as octenyloxy group; methylthio group, ethylthio group, propylthio group, butylthio group,
Pentylthio, hexylthio, heptylthio, octylthio, decylthio, methoxymethylthio,
Alkylthio groups such as ethoxyethylthio, ethoxyethylthio, and trifluoromethylthio; aralkylthio such as benzylthio and phenethylthio; phenylthio, tolylthio, naphthylthio, xylylthio, mesylthio, chlorophenylthio, Arylthio groups such as methoxyphenylthio group; dialkylamino groups such as dimethylamino group, diethylamino group, dipropylamino group, dibutylamino group;

Acyl groups such as acetyl group, propionyl group and butanoyl group; alkoxycarbonyl groups such as methoxycarbonyl group and ethoxycarbonyl group; aralkyloxycarbonyl groups such as benzyloxycarbonyl group and phenethyloxycarbonyl group;
Tolyloxycarbonyl group, naphthoxycarbonyl group,
Aryloxycarbonyl groups such as xylyloxycarbonyl group, mesyloxycarbonyl group, chlorophenoxycarbonyl group and methoxyphenoxycarbonyl group; vinyloxycarbonyl group, allyloxycarbonyl group, butenyloxycarbonyl group, butadienyloxycarbonyl group, Alkenyloxycarbonyl groups such as pentenyloxycarbonyl and octenyloxycarbonyl;
Methylaminocarbonyl group, ethylaminocarbonyl group, propylaminocarbonyl group, butylaminocarbonyl group, pentylaminocarbonyl group, hexylaminocarbonyl group, heptylaminocarbonyl group, octylaminocarbonyl group, nonylaminocarbonyl group, 3,
5,5-trimethylhexylaminocarbonyl group, 2-
2 to 10 carbon atoms such as an ethylhexylaminocarbonyl group
A monoalkylaminocarbonyl group, a dimethylaminocarbonyl group, a diethylaminocarbonyl group, a dipropylaminocarbonyl group, a dibutylaminocarbonyl group,
Dipentylaminocarbonyl group, dihexylaminocarbonyl group, diheptylaminocarbonyl group, dioctylaminocarbonyl group, piperidinocarbonyl group, morpholinocarbonyl group, 4-methylpiperazinocarbonyl group, 4-ethylpiperazinocarbonyl group, etc. Carbon number 3 ~
20 alkylaminocarbonyl groups such as 20 dialkylaminocarbonyl groups;

Furanyl, pyrrolyl, 3-pyrrolino, pyrrolidino, 1,3-oxolanyl, pyrazolyl, 2-pyrazolinyl, pyrazolidinyl, imidazolyl, oxazolyl, thiazolyl, 1,2,3
-Oxadiazolyl group, 1,2,3-triazolyl group,
1,2,4-triazolyl group, 1,3,4-thiadiazolyl group, 4H-pyranyl group, pyridinyl group, piperidinyl group, dioxanyl group, morpholinyl group, pyridazinyl group, pyrimidinyl group, pyrazinyl group, piperazinyl group,
Triazinyl group, benzofuranyl group, indolyl group,
Thionaphthenyl group, benzimidazolyl group, benzothiazolyl group, prenyl group, quinolinyl group, isoquinolinyl group, coumarinyl group, cinnolinyl group, quinoxalinyl group, dibenzofuranyl group, carbazolyl group, phenanthronylyl group, phenothiazinyl group, flavonyl group, etc. And a heterocyclic group substituted with a substituent such as a heterocyclic group.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted alkylsulfonyl groups represented by R ⁶ , R ⁷ and R ⁸ are the alkylsulfonyl groups having the same substituents as the above-mentioned alkyl groups, and are preferably methylsulfonyl groups, Ethylsulfonyl group,
n-propylsulfonyl, isopropylsulfonyl, n-butylsulfonyl, isobutylsulfonyl, t-butylsulfonyl, n-pentylsulfonyl, isoamylsulfonyl, t-amylsulfonyl, cyclopentylsulfonyl, n-hexylsulfonyl Group, cyclohexylsulfonyl group, n-heptylsulfonyl group, n-octylsulfonyl group, 2-ethylhexylsulfonyl group, 3,5,5-trimethylcyclohexylsulfonyl group, n-nonylsulfonyl group, n-decylsulfonyl group, decalylsulfonyl Groups, an adamantylsulfonyl group, a trifluoromethylsulfonyl group, and the like, and an alkylsulfonyl group having 1 to 10 carbon atoms.

In the formula (1), R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
Examples of the substituted or unsubstituted arylsulfonyl groups represented by R ⁶ , R ⁷ and R ⁸ are the arylsulfonyl groups having the same substituents as the above-mentioned alkyl groups, and preferably a phenylsulfonyl group, Tolylsulfonyl group, xylylsulfonyl group, isopropylphenylsulfonyl group, t-butylphenylsulfonyl group, fluorophenylsulfonyl group, chlorophenylsulfonyl group,
An arylsulfonyl group having 6 to 10 carbon atoms such as a trifluoromethylphenylsulfonyl group is exemplified.

The compound represented by formula (1) used in the present invention has a tautomeric structure and can have a tautomer. Specifically, equations (2-1) to (5-2)

[0065]

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[0066]

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[0067]

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[0068]

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[0069]

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[0070]

Embedded image In the present invention, the structure of the general formula (1) is shown for convenience, but the general formula (2-1), the general formula (2-2), the general formula (3), the general formula (3) 4) or a compound having the structure of the general formula (5-1) or the general formula (5-2), and may be a compound represented by the general formulas (1) to (5-2)
A mixture of the above structures may be used arbitrarily and can be used freely.

As a method for synthesizing the compound represented by the general formula (1) of the present invention, for example, the compound represented by the formula (6)

[0072]

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[Wherein R ¹ , R ² , R ³ , and R ⁴ represent the formula (1)
It has the same meaning as R ¹ , R ² , R ³ and R ⁴ in the formula. A compound represented by the formula (7)

[0074]

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[Wherein R ⁵ , R ⁶ , R ⁷ , and R ⁸ represent the formula (1)
Represents the same meaning as R ⁵ , R ⁶ , R ⁷ , and R ^{8 in FIG} . The compound of the general formula (1) can be obtained by performing a heat reaction in the presence or absence of a solvent together with the compound of the formula (1). In the reaction, a catalyst can be used if necessary.

Solvents used in the heating reaction include sulfur-containing solvents such as sulfolane, amide solvents such as N-methyl-2-pyrrolidinone and N, N-dimethylimidazolidin-2-one, and 1-chloronaphthalene. And halogenated aromatic hydrocarbon solvents such as dichlorobenzene and trichlorobenzene, and nitrated aromatic hydrocarbon solvents such as nitrobenzene. As the catalyst, isoquinoline, 1,8-diazabicyclo [5.4.0] -7-undecene, 1,5-diazabicyclo [4.3.0] -5-
Examples include amine compounds such as nonene.

Specific examples of the compound represented by the general formula (1) include compounds (1-1) to (1-2) shown in Table 1.
0).

[0078]

[Table 1]

[0079]

[Table 2]

[0080]

[Table 3]

[0081]

[Table 4]

In order to improve the recording characteristics, etc., it has an absorption maximum at a wavelength of 350 nm to 550 nm,
You may mix with compounds other than the above which have a large refractive index in 500 nm. Specifically, cyanine compounds, squarylium-based compounds, naphthoquinone-based compounds, anthraquinone-based compounds, tetrapyraporphyrazine-based compounds, indophenol-based compounds, pyrylium-based compounds, thiopyrylium-based compounds, azurenium-based compounds, triphenylmethane-based compounds, There are xanthene compounds, indasulen compounds, indigo compounds, thioindigo compounds, merocyanine compounds, thiazine compounds, acridine compounds, oxazine compounds, dipyrromethene compounds, and the like, and a mixture of a plurality of compounds may be used. . The mixing ratio of these compounds is about 0.1 to 30%.

At the time of forming the recording layer, a quencher, a compound thermal decomposition accelerator, an ultraviolet absorber, an adhesive or the like may be mixed with the above-mentioned compound, if necessary, or may have such an effect. It is also possible to introduce compounds as substituents of said compounds.

Specific examples of the quencher include bisacetylthionates, bisdithio-α-diketones, bisdithiols such as bisphenyldithiols, thiocateconals, salicylaldehyde oximes, and thiobisphenolates. Metal complexes are preferred. Also, amines are suitable.

The compound thermal decomposition accelerator is not particularly limited as long as it can confirm the promotion of the thermal decomposition of the compound by thermal weight loss analysis (TG analysis) and the like. Metal compounds such as acetylacetonate-based metal complexes are exemplified. Examples of metal-based anti-knocking agents include tetraethyl lead, other lead-based compounds, and Simantrene [Mn (C ₅ H ₅ ) (C
O) ₃ ], and examples of metallocene compounds include iron biscyclopentadienyl complex (ferrocene), Ti, V, Mn, Cr, Co, N
i, Mo, Ru, Rh, Zr, Lu, Ta, W, Os,
There are biscyclopentadienyl complexes such as Ir, Sc, and Y. Above all, ferrocene, ruthenocene, osmocene,
Nickelocene, titanocene and their derivatives have good thermal decomposition promoting effects.

Other iron-based metal compounds include, in addition to metallocene, organic acid iron compounds such as iron formate, iron oxalate, iron laurate, iron naphthenate, iron stearate and iron acetate; iron acetylacetonate complex; Phenanthroline iron complex, bispyridine iron complex, ethylenediamine iron complex,
Iron complexes such as iron complexes of ethylenediaminetetraacetate, iron complexes of diethylenetriamine, iron complexes of diethyleneglycol dimethylether, iron complexes of diphosphino and iron dimethylglyoximate, iron complexes such as carbonyl iron complexes, cyanoiron complexes and ammineiron complexes, Examples include iron halides such as iron, ferric chloride, ferrous bromide, and ferric bromide; inorganic iron salts such as iron nitrate and iron sulfate; and iron oxide. The thermal decomposition accelerator used here is desirably one that is soluble in an organic solvent and has good wet heat resistance and light resistance.

The various quenchers and the compound thermal decomposition accelerators described above may be used singly or as a mixture of other types as necessary.

Further, if necessary, additional substances such as a binder, a leveling agent, and an antifoaming agent may be added. Preferred binders include polyvinyl alcohol, polyvinylpyrrolidone, nitrocellulose, cellulose acetate, ketone resin, acrylic resin, polystyrene resin, urethane resin, polyvinyl butyral, polycarbonate, polyolefin and the like.

When a recording layer is formed on a substrate, in order to improve the solvent resistance, reflectance, recording sensitivity, etc. of the substrate,
A layer made of an inorganic substance or a polymer may be provided on the substrate.

Here, the content of the compound represented by the general formula (1) in the recording layer is 30% or more, preferably 60% or more.
% Or more. In addition, it is also preferable that it is substantially 100%.

The method for providing the recording layer includes, for example, a coating method such as a spin coating method, a spraying method, a casting method, and a dipping method, a sputtering method, a chemical vapor deposition method, and a vacuum vapor deposition method. Is preferred.

When a coating method such as a spin coating method is used, the compound represented by the general formula (1) is dissolved or dispersed in a solvent in an amount of 1 to 40% by weight, preferably 3 to 30% by weight. A coating solution is used, and at this time, it is preferable to select a solvent that does not damage the substrate.
For example, methanol, ethanol, isopropyl alcohol, octafluoropentanol, allyl alcohol, methyl cellosolve, ethyl cellosolve, alcohol solvents such as tetrafluoropropanol, hexane,
Aliphatic or alicyclic hydrocarbon solvents such as heptane, octane, decane, cyclohexane, methylcyclohexane, ethylcyclohexane, dimethylcyclohexane,
Aromatic hydrocarbon solvents such as toluene, xylene and benzene, halogenated hydrocarbon solvents such as carbon tetrachloride, chloroform, tetrachloroethane and dibromoethane,
Ether solvents such as diethyl ether, dibutyl ether, diisopropyl ether and dioxane; ketone solvents such as acetone and 3-hydroxy-3-methyl-2-butanone; ester solvents such as ethyl acetate and methyl lactate; and water. Can be These may be used alone or in combination. If necessary, the compound of the recording layer can be used by dispersing it in a polymer thin film or the like.

If a solvent that does not damage the substrate cannot be selected, a sputtering method, a chemical vapor deposition method, a vacuum vapor deposition method, or the like is effective.

The thickness of the recording layer is 30 nm to 1000 nm.
However, it is preferably 50 nm to 300 nm. If the thickness of the recording layer is less than 50 nm, recording may not be performed due to large thermal diffusion, or a recording signal may be distorted and the signal amplitude may be reduced. The thickness is 300 nm.
If the thickness is larger, the reflectance may decrease, and the reproduction signal characteristics may deteriorate.

Next, on the recording layer, preferably 50 nm
A reflective layer having a thickness of 300 nm is formed. A reflection amplification layer or an adhesive layer can be provided between the recording layer and the reflection layer in order to increase the reflectance and improve the adhesion. As a material of the reflection layer, one having a sufficiently high reflectance at the wavelength of the reproduction light, for example, Au, Al, Ag, Cu, Ti, Cr, Ni, P
The metals t, Ta, Cr and Pd can be used alone or as an alloy. Among them, Au, Al,
Ag has a high reflectance and is suitable as a material for the reflective layer. In addition, the following may be included. For example, M
g, Se, Hf, V, Nb, Ru, W, Mn, Re, F
e, Co, Rh, Ir, Zn, Cd, Ga, In, S
Metals and metalloids such as i, Ge, Te, Pb, Po, Sn, Bi and the like can be mentioned. Further, those containing Au as a main component are preferable because a reflection layer having high reflectance can be easily obtained. Here, the main component means a component having a content of 50% or more. It is also possible to form a multilayer film by alternately stacking low-refractive-index thin films and high-refractive-index thin films with a material other than a metal, and use it as a reflective layer.

As a method of forming the reflection layer, for example,
Examples include a sputtering method, an ion plating method, a chemical vapor deposition method, and a vacuum vapor deposition method. In addition, a known inorganic or organic intermediate layer or adhesive layer may be provided on the substrate or below the reflective layer to improve the reflectance, the recording characteristics, and the adhesion.

The material of the protective layer formed on the reflective layer is not particularly limited as long as it protects the reflective layer from external force. Examples of the organic substance include a thermoplastic resin, a thermosetting resin, an electron beam curable resin, and an ultraviolet curable resin. Further, as the inorganic substance, Si
O ₂ , SiO, Si ₃ N ₄ , MgF ₂ , AlN, SnO _{2 and the} like can be mentioned. A thermoplastic resin, a thermosetting resin, or the like can be formed by dissolving in a suitable solvent, applying a coating solution, and drying. The UV-curable resin can be formed by applying the coating solution after it has been prepared as it is or by dissolving it in a suitable solvent, and then irradiating the coating with ultraviolet rays to cure the resin. As the ultraviolet curable resin, for example, acrylate resins such as urethane acrylate, epoxy acrylate, and polyester acrylate can be used. These materials may be used alone or as a mixture, and may be used not only as a single layer but also as a multilayer film.

As a method for forming the protective layer, a coating method such as a spin coating method or a casting method, a sputtering method or a chemical vapor deposition method is used as in the recording layer, and among them, the spin coating method is preferable.

The thickness of the protective layer is generally from 0.1 μm to 1 μm.
In the present invention, the range is from 3 μm to
It is 30 μm, more preferably 5 μm to 20 μm. Printing of a label or the like can be further performed on the protective layer. Alternatively, means such as bonding a protective sheet or a substrate to the reflective layer surface, or bonding two optical recording media with the reflective layer surfaces facing each other and facing each other may be used.

On the mirror side of the substrate, an ultraviolet curable resin, an inorganic thin film or the like may be formed to protect the surface or prevent adhesion of dust and the like.

Here, the wavelength of 400 nm to 5
The laser of 00 nm is not particularly limited. For example, a dye laser capable of selecting a wavelength in a wide range of the visible light region, a helium cadmium laser having a wavelength of 445 nm, and a laser having a wavelength of 48
8nm argon laser, wavelength about 390-410nm
GaN based semiconductor laser, wavelength about 850-860nm
And a semiconductor laser that oscillates a second harmonic of about 425 to 430 nm of the infrared laser. According to the present invention, high-density recording and reproduction can be performed at one wavelength or a plurality of wavelengths selected from these.

[0102]

EXAMPLES Examples of the present invention will be shown below, but the present invention is not limited by these examples.

Example 1 Among the compounds represented by the general formula (1), the compound (1-
1) 0.2 g was dissolved in 10 ml of diacetone alcohol to prepare a compound solution.

Outer diameter 120 m made of polycarbonate resin and having continuous guide grooves (track pitch: 0.7 μm)
This compound solution was spin-coated on a disc-shaped substrate having a thickness of 0.6 mm and a thickness of 0.6 mm at a rotation speed of 2000 rpm, and dried at 70 ° C. for 3 hours to form a recording layer.

Au was sputtered on the recording layer using a sputtering apparatus manufactured by Shimadzu Corporation to form a reflective layer having a thickness of 100 nm. Argon gas was used as a sputtering gas. The sputtering conditions were a sputtering power of 0.5 A and a sputtering gas pressure of 1.0 × 10 ⁻³ torr.

Further, an ultraviolet curable resin S
After spin-coating D-301 (manufactured by Dainippon Ink and Chemicals, Inc.), a substrate without a guide groove similar to the above-mentioned substrate was placed thereon, and the substrates were bonded by irradiating ultraviolet rays to produce an optical recording medium.

The pits were written on the optical recording medium having the recording layer formed as described above as follows.

An optical disk evaluation device (DDU-1000) manufactured by Pulstec Industrial equipped with a 430 nm blue harmonic conversion laser head (NA = 0.65) and KENWO
Using the OD EFM encoder, the shortest pit is 0.
A 4 μm EFM modulated signal was recorded at a linear velocity of 5.6 m / s and a laser power of 10 mW. After recording, a signal was reproduced with the laser output set to 0.5 mW using the same evaluation apparatus. At the time of reproduction, an equalization process was performed.

As a result of measuring the reflectance, the error rate, and the jitter, the reflectance was 46%, the error rate was 9 cps, and the jitter was 9.6%.

Further, the recorded medium was subjected to an accelerated deterioration test (humidity: 85% RH, 80 ° C. for 100 hours), and the reflectance, error rate, and jitter after the test were measured. The change is as small as 1% change, 1cps error rate change, and 0.6% jitter change.
It was confirmed that it had excellent durability.

Examples 2 to 10 Optical recording media were prepared in the same manner as in Example 1 except that the compounds (1-2) to (1-10) were used for the recording layer, and pits were written and recorded. The signal was reproduced. In each case, the initial reflectance is 40% or more, and the error rate is 11
Good values were obtained, that is, cps or less and jitter of 10% or less.

The change in reflectance after the accelerated deterioration test was 2%.
% Or less, the change in error rate is 2 cps or less, and the change in jitter is as small as 1% or less, confirming that it has excellent durability.

Table 2 shows the reflectance, error rate, and jitter before and after the accelerated deterioration test in Examples 1 to 10.

[0114]

[Table 5]

Examples 11 to 20 An optical recording medium was produced in the same manner as in Example 1 except that the compounds (1-11) to (1-20) were used for the recording layer. The signal was reproduced. In each case, the reflectance is 40% or more, and the error rate is 11 cp.
s or less, and a good value of jitter of 10% or less.

The change in reflectance after the accelerated deterioration test was 2%.
% Or less, the change in error rate is 2 cps or less, and the change in jitter is as small as 1% or less, confirming that it has excellent durability.

Table 3 shows the reflectance, error rate, and jitter value before and after the accelerated deterioration test in Examples 11 to 20.

[0118]

[Table 6]

Example 21 Instead of 0.2 g of the compound (1-1) used in Example (1), 0.1 g of the compound (1-1) and the compound (1-15)
An optical recording medium was manufactured in the same manner as in Example 1 except that 0.1 g was used, and pits were written and recorded, and then signal reproduction was performed. As a result, the reflectance is 45% and the error rate is 9c.
It showed good values of ps and jitter of 9.7%.

The change in reflectance after the accelerated deterioration test was 1
%, The change in the error rate was 1 cps, and the change in the jitter was as small as 0.7%, confirming that it had excellent durability.

As described in Examples 1 to 21, each of the optical recording media of the present invention has a high reflectance and is excellent in recording characteristics and durability.

From this, the recording layer containing the compound having the structure defined in the present invention can record a signal with a blue laser. Can be used.

Comparative Example 1 Instead of the compound (1-1), a compound of the formula (a)

[0124]

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The same procedures as in Example 1 were carried out except that
An optical recording medium was manufactured, pit writing was performed, and then an accelerated deterioration test was performed. As a result, it was found that the recording layer was discolored and became unreproducible, and this medium lacked storage stability.

Comparative Example 2 Instead of the compound (1-1), a compound of the formula (b)

[0127]

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[0128] Except for using the same procedures as in Example 1,
An optical recording medium was manufactured. Crystal precipitation was observed in the recording layer of this medium, pits could not be written, recording was impossible, and reproduction was impossible.

[0129]

According to the present invention, by using the compound represented by the general formula (1) as a recording layer, the wavelength of 400 nm to 5 nm, which is attracting much attention as a high-density optical recording medium, is obtained.
It is possible to provide a write-once optical recording medium that can be recorded and reproduced with a laser of 00 nm.

[Brief description of the drawings]

FIG. 1 is a sectional structural view showing an example of a layer configuration of an optical recording medium according to the present invention.

FIG. 2 is a sectional structural view showing an example of a layer configuration of an optical recording medium according to the present invention.

[Explanation of symbols]

 1: substrate 2: recording layer 3: reflective layer 4: protective layer 5: adhesive layer

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tsukahara U 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture Inside (72) Inventor Taizo Nishimoto 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Mitsui Chemical Co., Ltd. 72) Inventor Densumi Misawa 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Pref. (72) Inventor Keisuke Takuma 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa F-term in Mitsui Chemicals Co., Ltd. 2H111 EA03 EA12 EA22 EA32 FA01 FA12 FB42 5D029 JA04 JC17

Claims (2)

[Claims] 1. An optical recording medium having at least a recording layer and a reflective layer on a substrate, wherein the recording layer contains a compound represented by the general formula (1) as one of the tautomeric structures in the recording layer. . Embedded image [Wherein, R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ⁸ each independently represent a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group, an aralkyl Group, aryl group, alkoxy group, aralkyloxy group, aryloxy group, alkenyl group, alkenyloxy group, alkylthio group, aralkylthio group, arylthio group, alkenylthio group, alkylamino group, aralkylamino group, arylamino group, alkenyl Amino group, acyl group, alkoxycarbonyl group, aralkyloxycarbonyl group, aryloxycarbonyl group, alkenyloxycarbonyl group, alkylaminocarbonyl group, aralkylaminocarbonyl group, arylaminocarbonyl group, alkenylaminocarbonyl group, heterocyclic group, alkyl Sulfonyl group, ant It represents a Rusuruhoniru group. ] 2. The optical recording medium according to claim 1, wherein recording and reproduction can be performed with respect to a laser beam selected from a wavelength range of 400 nm to 500 nm.