JP2000113504A - Optical recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a compd. suitable for ultrahigh density recording in which good recording and reproduction are possible with laser light of a specified wavelength by incorporating a naphthalene compd. into the a recording layer. SOLUTION: This optical recording medium consists of a substrate, recording layer, reflection layer and protective layer successively formed, and the recording layer contains a compd. expressed by the formula to enable recording and reproducing with laser light in 400 to 500 nm wavelength region. In the formula, each of A and B is an aromatic hydrocarbon group or heterocyclic group which may have substituents. As for the aromatic hydrocarbons A and B, unsubstd. aromatic hydrocarbon groups such as monocyclic hydrocarbon groups such as phenyl groups, polycyclic hydrocarbon groups such as naphthyl group and indenyl group, or aromatic hydrocarbon groups having substituents of halogen atoms, cyano groups, alkyl groups or the like can be used. As for the substrate, for example, polycarbonate resin is used. The naphthalene compd. expressed by the formula can be easily obtd. by heating and reacting 1,4,5,8-naphthalene tetracarboxylic acid and amines expressed by A-NH2 or B-NH2.

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) conforming to the compact disk (hereinafter abbreviated as CD) standard is used.
e) is widespread. CD-R recording capacity is 0.6
Although it is about 5 GB, with the dramatic increase in the amount of information, demands for higher density and larger capacity of information recording media are 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]. DVDs using these semiconductor lasers and digitally recording moving images of 2 hours or more have 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],
A write-once optical recording medium corresponding to this is also being 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, there are only a few examples of compounds actually proposed, such as porphyrin compounds described in JP-A-7-304256 and the like, and their development is urgently needed.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording layer having a compound suitable for ultra-high-density recording capable of performing good recording and reproduction with a laser beam having a wavelength of 400 nm to 500 nm. It is to provide a recording medium.

[0007]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned 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)

[0008]

Embedded image

[In the formula, A and B each represent an aromatic hydrocarbon group or a heterocyclic group which may have a substituent. An optical recording medium containing a naphthalene compound represented by
In particular, 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.

[0010]

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.

Basically, the material of the substrate may be any material as long as it is 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 naphthalene compound represented by the general formula (1). It contains the represented naphthalene compound.

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

The general formula (1) contained in the recording layer of the present invention
For the naphthalene compound represented by the formula (1),
Examples of the aromatic hydrocarbon group which may have a substituent represented by A or B include a monocyclic hydrocarbon group such as a phenyl group,
Unsubstituted aromatic hydrocarbon groups such as polycyclic hydrocarbon groups such as naphthyl group, indenyl group, anthracenyl group, fluorenyl group, azulenyl group, naphthacenyl group, chrysenyl group, pyrenyl group, perylenyl group; halogen atom, cyano group, A substituted or unsubstituted alkyl group, an aralkyl group, an aryl group, an alkoxy group, an aralkyloxy group, an aryloxy group, an alkenyl group, an alkenyloxy group, an alkylthio group, an aralkylthio group, an arylthio group, an alkylamino group, an aralkylamino group, Arylamino group, alkenylamino group, acyl group, alkoxycarbonyl group, aralkyloxycarbonyl group, aryloxycarbonyl group, alkenyloxycarbonyl group, alkylaminocarbonyl group, naphthyl group substituted by heterocyclic group, indenyl group Anthracenyl group, a fluorenyl group, an azulenyl group, naphthacenyl group, chrysenyl group,
Examples include an aromatic hydrocarbon group having a substituent such as a pyrenyl group and a perylenyl group.

The general formula (1) contained in the recording layer of the present invention
For the naphthalene compound represented by the formula (1),
The heterocyclic group which may have a substituent represented by A or B includes a furanyl group, a pyrrolyl group, a 3-pyrolinyl group,
Pyrrolidinyl, 1,3-oxolanyl, pyrazolyl, 2-pyrazolinyl, pyrazolidinyl, imidazolyl, oxazolyl, thiazolyl, 1,2,3-
An oxadiazolyl group, a 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,
Such as a thionaphthenyl group, a benzimidazolyl group, a benzothiazolyl group, a prenyl group, a quinolinyl group, an isoquinolinyl group, a coumarinyl group, a cinnolinyl group, a quinoxalinyl group, a dibenzofuranyl group, a carbazolyl group, a phenanthronylyl group, a phenothiazinyl group, and a flavonyl group. Unsubstituted heterocyclic group; halogen atom, cyano group, substituted or unsubstituted alkyl group, aralkyl group, aryl group, alkoxy group, aralkyloxy group, aryloxy group, alkenyl group, alkenyloxy group, alkylthio group, aralkylthio group , Arylthio, dialkylamino, acyl, alkoxycarbonyl, aralkyloxycarbonyl, aryloxycarbonyl, alkenyloxycarbonyl, alkylaminocarbonyl, heterocyclic groups The furanyl group, a pyrrolyl group,
3-pyrrolinyl group, pyrrolidinyl 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, thionafenyl 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,
Examples include a heterocyclic group having a substituent such as a flavonyl group and a perimidino group.

The general formula (1) contained in the recording layer of the present invention
Specific examples of the naphthalene compound represented by the general formula (2), which is a preferable compound, are described below in detail.

[0018]

Embedded image

[In the formula, Z ₁ and Z ₂ each independently represent a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group, an aralkyl group, an aryl group, an alkoxy group,
Aralkyloxy group, aryloxy group, alkenyl group, alkenyloxy group, alkylthio group, aralkylthio group, arylthio group, alkylamino group, aralkylamino group, arylamino group, alkenylamino group,
Acyl group, alkoxycarbonyl group, aralkyloxycarbonyl group, aryloxycarbonyl group, alkenyloxycarbonyl group, alkylaminocarbonyl group,
A monocyclic or polycyclic aromatic hydrocarbon group substituted with a heterocyclic group, or a heterocyclic group. ]

In the formula (2), examples of the unsubstituted monocyclic or polycyclic aromatic hydrocarbon groups represented by Z ₁ and Z ₂ include a monocyclic hydrocarbon group such as a phenyl group, a naphthyl group and an indenyl group. And unsubstituted aromatic hydrocarbon groups such as polycyclic hydrocarbon groups such as a group, anthracenyl group, fluorenyl group, azulenyl group, naphthacenyl group, chrysenyl group, pyrenyl group, and perylenyl group.

In the formula (2), the unsubstituted monocyclic or polycyclic heterocyclic group represented by Z ₁ and Z ₂ is a furanyl group;
Pyrrolyl group, 3-pyrrolinyl group, pyrrolidinyl 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,
Examples include unsubstituted heterocyclic groups such as a carbazolyl group, a phenanthronyl group, a phenothiazinyl group, a flavonyl group, and a perimidino group.

In the formula (2), the monocyclic or polycyclic aromatic hydrocarbon group represented by Z ₁ or Z ₂ or the group substituted with the heterocyclic group may be a polycarbonate, acrylic, epoxy or polyolefin substrate. It is possible to select and use a group having a good processability by coating on the substrate.

In the formula (2), the monocyclic or polycyclic aromatic hydrocarbon group or heterocyclic group represented by Z ₁ or Z ₂ may be a fluorine, chlorine, bromine or iodine group. Examples include a halogen atom such as an atom or a cyano group.

As the substituted or unsubstituted alkyl group,
Linear or branched or cyclic unsubstituted alkyl group, halogen atom, hydroxy group, cyano group, alkoxy group, acyl group, acyloxy group, alkoxycarbonyl group, aryloxycarbonyl group, aralkyloxycarbonyl group, alkenyloxycarbonyl group, alkoxy Carbonyloxy group, dialkylamino group, acylamino group,
Examples include an alkyl group substituted with a substituent selected from a group of substituents such as an alkylsulfoneamino group, an alkylsulfone group, and a heterocyclic group.

The substituted or unsubstituted linear, branched or cyclic alkyl group includes a methyl group, an ethyl group, 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-ethyl-2-methylpropyl group, cyclohexyl group, n-heptyl group, 2-methylhexyl group, 3-methylhexyl group, 4-methylhexyl group , 5-methylhexyl, 2,4-dimethylpentyl, n-octyl, 2-ethylhexyl, 2,5-dimethylhexyl, 2,5,5-trimethylpentyl, 2,4-dimethylhexyl A 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
C1-C15-free groups such as -dimethylheptyl group, 2,2,5,5-tetramethylhexyl group, 1-cyclopentyl-2,2-dimethylpropyl group, 1-cyclohexyl-2,2-dimethylpropyl group; A substituted alkyl group;

Chloromethyl, chloroethyl, bromoethyl, iodoethyl, dichloromethyl, fluoromethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 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 ;

2-hydroxyethyl group, 2-hydroxymethyl group, 4-hydroxyethyl 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-
Hydroxypropyl group, 2-hydroxybutyl group, 4-
An alkyl group having 1 to 10 carbon atoms substituted by a hydroxy group such as a hydroxydecalyl-2-oxy group; a hydroxymethoxymethyl group, a hydroxyethoxyethyl group,
(2′-hydroxy-1′-methylethoxy) -1-methylethyl group, 2- (3′-fluoro-2′-hydroxypropoxy) ethyl group, 2- (3′-chloro-2′-
An alkyl group having 2 to 10 carbon atoms substituted by a hydroxyalkoxy group such as hydroxypropoxy) ethyl group or hydroxybutoxycyclohexyloxy group; 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 other hydroxyalkoxyalkoxy-substituted C3-C1
An alkyl group of 0;

Cyanomethyl group, 2-cyanoethyl group, 4
-Cyanoethyl group, 2-cyano-3-methoxypropyl group, 2-cyano-3-chloropropyl group, 2-cyano-
C2-C10 alkyl substituted by cyano groups such as 3-ethoxypropyl group, 3-butoxy-2-cyanopropyl group, 2-cyano-3-cyclohexylpropyl group, 2-cyanopropyl group and 2-cyanobutyl group Group;

Methoxymethyl, ethoxymethyl, propoxymethyl, butoxymethyl, methoxyethyl, ethoxyethyl, propoxyethyl, butoxyethyl, n-hexyloxyethyl, 4-methylpentoxyethyl, 1,3-dimethylbutoxyethyl group, 2-ethylhexyloxyethyl group, n-octyloxyethyl group, 3,5,5-trimethylhexyloxyethyl group, 2-methyl-1-iso-propylpropoxyethyl group, 3- Methyl-1-iso-propylbutyloxyethyl group, 2-ethoxy-1-methylethyl group, 3-methoxybutyl group, 3,3,3-trifluoropropoxyethyl group, 3,3,3-trichloropropoxyethyl group Having 2 to 1 carbon atoms substituted by an alkoxy group such as
5 alkyl groups: methoxymethoxymethyl group, methoxyethoxyethyl group, ethoxyethoxyethyl group, propoxyethoxyethyl group, butoxyethoxyethyl group, cyclohexyloxyethoxyethyl group, decalyloxypropoxyethoxy group, 1,2-dimethylpropoxyethoxy Ethyl group, 3-methyl-1-iso-butylbutoxyethoxyethyl group, 2-methoxy-1-methylethoxyethyl group, 2-butoxy-1-methylethoxyethyl group, 2- (2′-ethoxy-1′- Methyl ethoxy)
An alkyl group having 3 to 15 carbon atoms, which is substituted by an alkoxyalkoxy group such as -1-methylethyl group, 3,3,3-trifluoropropoxyethoxyethyl group, 3,3,3-trichloropropoxyethoxyethyl group; methoxymethoxy Methoxymethyl group, methoxyethoxyethoxyethyl group, ethoxyethoxyethoxyethyl group, butoxyethoxyethoxyethyl group, cyclohexyloxy, propoxypropoxypropoxy group, 2,2,2-trifluoroethoxyethoxyethoxyethyl group, 2,2,2-
4-1 carbon atoms substituted by alkoxyalkoxyalkoxy such as trichloroethoxyethoxyethoxyethyl group
5 alkyl groups;

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 by an acyl group such as a butyl-1-cyclohexyl group; formyloxymethyl group, acetoxyethyl group, propionyloxyethyl group, butanoyloxyethyl group, valeryloxyethyl group, 2- Ethylhexanoyloxyethyl group, 3,5
5-trimethylhexanoyloxyethyl group, 3,5
Carbon number 2 substituted with an acyloxy group such as a 5-trimethylhexanoyloxyhexyl group, a 3-fluorobutyryloxyethyl group, or a 3-chlorobutyryloxyethyl group;
To 15 alkyl groups; formyloxymethoxymethyl group, acetoxyethoxyethyl group, propionyloxyethoxyethyl group, valeryloxyethoxyethyl group,
2-ethylhexanoyloxyethoxyethyl group, 3,
Acyloxyalkoxy groups such as 5,5-trimethylhexanoyloxybutoxyethyl group, 3,5,5-trimethylhexanoyloxyethoxyethyl group, 2-fluoropropionyloxyethoxyethyl group, 2-chloropropionyloxyethoxyethyl group are substituted An alkyl group having 3 to 15 carbon atoms;

Acetoxymethoxymethoxymethyl group, acetoxyethoxyethoxyethyl group, propionyloxyethoxyethoxyethyl group, valeryloxyethoxyethoxyethyl group, 2-ethylhexanoyloxyethoxyethoxyethyl group, 3,5,5-trimethylhexanoyl Oxyoxyethoxyethoxyethyl group, 2-fluoropropionyloxyethoxyethoxyethyl group,
An alkyl group having 5 to 15 carbon atoms substituted with an acyloxyalkoxyalkoxy group such as a 2-chloropropionyloxyethoxyethoxyethyl group;

Methoxycarbonylmethyl, ethoxycarbonylmethyl, butoxycarbonylmethyl, methoxycarbonylethyl, ethoxycarbonylethyl, butoxycarbonylethyl, p-ethylcyclohexyloxycarbonylcyclohexyl, 2,2
An alkyl group having 3 to 15 carbon atoms substituted by an alkoxycarbonyl group such as a 3,3-tetrafluoropropoxycarbonylmethyl group or a 2,2,3,3-tetrachloropropoxycarbonylmethyl group; a phenoxycarbonylmethyl group or a phenoxycarbonylethyl Group, a carbon number of 8 to 8 substituted with an aryloxycarbonyl group such as a 4-t-butylphenoxycarbonylethyl group, a naphthyloxycarbonylmethyl group, a biphenyloxycarbonylethyl group, etc.
An alkyl group having 9 to 15 carbon atoms substituted by an aralkyloxycarbonyl group such as a benzyloxycarbonylmethyl group, a benzyloxycarbonylethyl group, a phenethyloxycarbonylmethyl group, and a 4-cyclohexyloxybenzyloxycarbonylmethyl group;

An alkyl group having 4 to 10 carbon atoms substituted by an alkenyloxycarbonyl group such as a vinyloxycarbonylmethyl group, a vinyloxycarbonylethyl group, an allyloxycarbonylmethyl group, an octenoxycarbonylmethyl group; a methoxycarbonyloxymethyl group Methoxycarbonyloxyethyl group, ethoxycarbonyloxyethyl group, butoxycarbonyloxyethyl group, 2,
An alkyl group having 3 to 15 carbon atoms substituted by an alkoxycarbonyloxy group such as a 2,2-trifluoroethoxycarbonyloxyethyl group or a 2,2,2-trichloroethoxycarbonyloxyethyl group; a methoxymethoxycarbonyloxymethyl group, a methoxy group Ethoxycarbonyloxyethyl group, ethoxyethoxycarbonyloxyethyl group, butoxyethoxycarbonyloxyethyl group,
An alkyl group having 4 to 15 carbon atoms substituted by an alkoxyalkoxycarbonyloxy group such as a 2,2,2-trifluoroethoxyethoxycarbonyloxyethyl group and a 2,2,2-trichloroethoxyethoxycarbonyloxyethyl 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 A di (ethoxyethyl) aminoethyl group, a di (propoxyethyl) aminoethyl group, a di (butoxyethyl) aminoethyl group, a bis (2-cyclohexyloxyethyl) aminoethyl group; a dimethylaminopropyl group, a 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; an acetylaminomethyl group, an acetylaminoethyl group, a propionylaminoethyl group, a butanoylamino An alkyl group having 3 to 10 carbon atoms substituted by an acylamino group such as an ethyl group, a cyclohexanecarbonylaminoethyl group, a p-methylcyclohexanecarbonylaminoethyl group, a succiniminoethyl group;

An alkyl group having 2 to 10 carbon atoms substituted by an alkylsulfonamino group such as a methylsulfonaminomethyl group, a methylsulfonaminoethyl group, an ethylsulfonaminoethyl group, a propylsulfonaminoethyl group, an octylsulfonaminoethyl group; Methyl sulfone methyl group, ethyl sulfone methyl group, butyl sulfone methyl group, methyl sulfone ethyl group, ethyl sulfone ethyl group, butyl sulfone ethyl group, 2-ethylhexyl sulfone ethyl group, 2,2,3,3-tetrafluoropropyl sulfone methyl An alkyl group having 2 to 10 carbon atoms substituted by an alkylsulfone group such as a 2,2,3,3-tetrachloropropylsulfonmethyl group; a pyrrinomethyl group, a pyrrolidinomethyl group, a pyrazolidinomethyl group, an imidazolidino Methyl group, Kisazoriru group, triazolylmethyl Roh methyl group, morpholinomethyl group, India over Reno methyl group,
Examples include an alkyl group substituted with a heterocyclic group such as a benzimidazolinomethyl group and a carbazolinomethyl group.

Examples of the substituted or unsubstituted aralkyl groups are aralkyl groups having the same substituents as the above-mentioned alkyl groups, preferably benzyl, nitrobenzyl, cyanobenzyl and hydroxybenzyl. A methylbenzyl group, a trifluoromethylbenzyl group, a naphthylmethyl group, a nitronaphthylmethyl group, a cyanonaphthylmethyl group, a hydroxynaphthylmethyl group, a methylnaphthylmethyl group, a trifluoromethylnaphthylmethyl group, a fluoren-9-ylethyl group and the like. Carbon number 7
To 15 aralkyl groups and the like.

Examples of the substituted or unsubstituted aryl group are aryl groups having the same substituents as the above-mentioned alkyl groups, preferably phenyl, nitrophenyl, cyanophenyl and hydroxyphenyl. A methylphenyl group, a trifluoromethylphenyl group, a naphthyl group, a nitronaphthyl group, a cyanonaphthyl group, a hydroxynaphthyl group, a methylnaphthyl group, a trifluoromethylnaphthyl group, a methylcarbonylcarbonyl group,
An aryl group having 6 to 15 carbon atoms such as a (5′-methylbenzoxazol-2′-yl) phenyl group and a dibutylaminocarbonylphenyl group are exemplified.

Examples of substituted or unsubstituted alkoxy groups include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, t
tert-butoxy group, sec-butoxy group, n-pentyloxy group, isopentyloxy group, tert-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-ethylbutoxy group, 2-ethylbutoxy 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, 1,1,2-trimethylbutoxy group, 1,1,3-trimethylbutoxy group, 1,2,3
-Trimethylbutoxy, 1,2,2-trimethylbutoxy, 1,3,3-trimethylbutoxy, 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, methylcyclohexyloxy 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-dimethyl Hexyloxy group, 2,4-dimethylhexyloxy 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-trimethylpentyloxy group, 1,3,4-trimethylpentyloxy group, 2,2,3-trimethylpentyl Oxy group, 2,
2,4-trimethylpentyloxy group, 2,3,4-trimethylpentyloxy group, 1,3,3-trimethylpentyloxy group, 2,3,3-trimethylpentyloxy group, 3,3,4-trimethylpentyl Oxy group, 1,
4,4-trimethylpentyloxy group, 2,4,4-trimethylpentyloxy group, 3,4,4-trimethylpentyloxy group, 1-n-butylbutoxy group, 1-isobutylbutoxy group, 1-sec-butyl Butoxy group, 1
-Tert-butylbutoxy group, 2-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-
Dimethylbutoxy group, 2-ethyl-1,2-dimethylbutoxy group, 2-ethyl-1,3-dimethylbutoxy group,
2-ethyl-2,3-dimethylbutoxy group, 1,2-dimethylcyclohexyloxy group, 1,3-dimethylcyclohexyloxy group, 1,4-dimethylcyclohexyloxy group, ethylcyclohexyloxy group, n-nonyloxy group, 3 , 5,5-trimethylhexyloxy group,
a linear, branched or cyclic unsubstituted alkoxy group having 1 to 15 carbon atoms such as an n-decyloxy group, an n-undecyloxy group, an n-dodecyloxy group, a 1-adamantyloxy group, and an n-pentadecanyloxy group. ;

Methoxymethoxy, methoxyethoxy, ethoxyethoxy, n-propoxyethoxy,
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
-Trimethylhexyloxyethoxy group, 3,5,5-
Trimethylhexyloxybutoxy 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-methoxybutoxy group, 2-ethoxybutoxy group, 2
An alkoxy group having 2 to 15 carbon atoms, which is substituted with an alkoxy group, such as-(n-propoxy) butoxy group, 4-isopropoxybutoxy group, decalyloxyethoxy group, adamantyloxyethoxy group;

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 group, butoxybutoxybutoxy group, 4-ethylcyclohexyloxyethoxyethoxy group, (2-ethyl-1-hexyloxy) ethoxypropoxy group, 4- (3,5,5-trimethylhexyloxybutoxyethoxy group Linear, branched or cyclic C3-C15 alkoxy groups substituted with alkoxyalkoxy groups;

Methoxycarbonylmethoxy, ethoxycarbonylmethoxy, n-propoxycarbonylmethoxy, isopropoxycarbonylmethoxy, 4'-
An alkoxy group having 3 to 10 carbon atoms substituted by an alkoxycarbonyl group such as an ethylcyclohexyloxycarbonylmethoxy group; an acyl group having 1 to 10 carbon atoms such as a formylmethoxy group, an acetylmethoxy group, an ethylcarbonylmethoxy group, and an octylcarbonylmethoxy group An alkoxy group having 3 to 10 carbon atoms substituted with an acyloxy group such as an acetyloxymethyl group, an acetyloxyethyl group, an acetyloxyhexyloxy group, a butanoyloxycyclohexyloxy group; a dimethylaminomethoxy group; -Dimethylaminoethoxy group, 2-
(2-dimethylaminoethoxy) ethoxy group, 4-dimethylaminobutoxy group, 1-dimethylaminopropane-
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, 4- (di-n
An alkoxy group having 3 to 15 carbon atoms and substituted with a dialkylamino group, such as -hexylamino) propyl group;

Carbon substituted with a dialkylaminoalkoxy group such as a dimethylaminomethoxymethoxy group, a dimethylaminoethoxyethoxy group, a dimethylaminoethoxypropoxy group, a diethylaminoethoxypropoxy group, and a 4- (2'-diisobutylaminopropoxy) butoxyoxy group. An alkoxy group of the formulas 4 to 15; 2-methylthiomethoxy group, 2-methylthioethoxy group, 2-ethylthioethoxy group, 2-n-propylthioethoxy group, 2-
Isopropylthioethoxy group, 2-n-butylthioethoxy group, 2-isobutylthioethoxy group, 3,5,5-
An alkoxy group having 2 to 15 carbon atoms and substituted with an alkylthio group, such as a trimethylhexyloxyhexyloxy group;
And the like, preferably a methoxy group, an ethoxy group,
n-propoxy group, iso-propoxy group, n-butoxy group, iso-butoxy group, sec-butoxy group, t-
Alkoxy having 1 to 10 carbon atoms such as butoxy group, n-pentoxy group, iso-pentoxy group, neopentoxy group, 2-methylbutoxy group, 2-ethylhexyloxy group, 3,5,5-trimethylhexyloxy group, and decalyl group Groups.

Examples of the substituted or unsubstituted aralkyloxy groups are aralkyloxy groups having the same substituents as the above-mentioned alkyl groups, preferably benzyloxy, nitrobenzyloxy, cyanobenzyloxy. Group, hydroxybenzyloxy group, methylbenzyloxy group, trifluoromethylbenzyloxy group, naphthylmethoxy group, nitronaphthylmethoxy group, cyanonaphthylmethoxy group, hydroxynaphthylmethoxy group,
Examples thereof include an aralkyloxy group having 7 to 15 carbon atoms, such as a methylnaphthylmethoxy group, a trifluoromethylnaphthylmethoxy group, and a fluoren-9-ylethoxy group.

Examples of the substituted or unsubstituted aryloxy group include aryloxy groups having the same substituents as the above-mentioned alkyl groups, preferably phenoxy, 2-methylphenoxy, 4-methyl Examples thereof include those having 6 to 10 carbon atoms such as a phenoxy group, a 4-t-butylphenoxy group, a 2-methoxyphenoxy group, a 4-iso-propylphenoxy group, and a naphthoxy group.

Examples of the substituted or unsubstituted alkenyl groups are alkenyl groups having the same substituents as the above-mentioned alkyl groups, and are preferably vinyl, propenyl, 1-butenyl, iso-butenyl. Group, 1-pentenyl group, 2-pentenyl group, 2-methyl-1-butenyl group, 3-methyl-1-butenyl group, 2-methyl-2-
Butenyl group, 2,2-dicyanovinyl group, 2-cyano-
2-methylcarboxylvinyl group, 2-cyano-2-methylsulfonevinyl group, styryl group, 4-phenyl-2
An alkenyl group having 2 to 10 carbon atoms such as -butenyl group.

Examples of the substituted or unsubstituted alkenyloxy group include alkenyloxy groups having the same substituents as the above-mentioned alkyl groups, and are preferably a vinyloxy group, a propenyloxy group, a 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-methylsulfonvinyloxy group, styryloxy group, 4-phenyl-2- An alkenyloxy group having 2 to 10 carbon atoms such as a butenyloxy group is exemplified.

Examples of the substituted or unsubstituted alkylthio group include an alkylthio group having the same substituent as the above-mentioned alkyl group, preferably a methylthio group,
Ethylthio group, n-propylthio group, iso-propylthio group, n-butylthio group, iso-butylthio group, s
ec-butylthio group, t-butylthio group, n-pentylthio group, iso-pentylthio group, neopentylthio group, 2-methylbutylthio group, methylcarboxylethylthio group, 2-ethylhexyl group, 3,5,5-trimethyl 1 to 1 carbon atoms such as hexylthio and decalylthio
And 10 alkylthio groups.

Examples of the substituted or unsubstituted aralkylthio groups are aralkylthio groups having the same substituents as the above-mentioned alkyl groups, preferably benzylthio, nitrobenzylthio, cyanobenzylthio and the like. ,
Hydroxybenzylthio, methylbenzylthio, trifluoromethylbenzylthio, naphthylmethylthio, nitronaphthylmethylthio, cyanonaphthylmethylthio, hydroxynaphthylmethylthio, methylnaphthylmethylthio, trifluoromethylnaphthylmethylthio, fluorene- And an aralkylthio group having 7 to 15 carbon atoms such as a 9-ylethylthio group.

Examples of the substituted or unsubstituted arylthio groups are the arylthio groups having the same substituents as the above-mentioned alkyl groups, and are preferably phenylthio, 4-methylphenylthio, 2-methoxyphenyl Examples thereof include an arylthio group having 6 to 10 carbon atoms such as a thio group, a 4-t-butylphenylthio group, and a naphthylthio group.

Examples of the substituted or unsubstituted alkylamino group include an alkylamino group having the same substituent as the above-mentioned alkyl group, preferably a methylamino group, an ethylamino group, a propylamino group, Carbon number of butylamino group, pentylamino group, hexylamino group, heptylamino group, octylamino group, 2-ethylhexylamino group, cyclohexylamino group, 3,5,5-trimethylhexylamino group, nonylamino group, decylamino group, etc. 1 to 10 monoalkylamino groups, dimethylamino groups, diethylamino groups, methylethylamino groups, butylamino groups, piperidino groups, morpholino groups, di (acetyloxyethyl) amino groups, di (propionyloxyethyl) amino groups, and the like Dialkylamino groups having 2 to 10 carbon atoms It is.

Examples of the substituted or unsubstituted aralkylamino groups are aralkylamino groups having the same substituents as the above-mentioned alkyl groups, preferably benzylamino, phenethylamino, 3-phenylpropyl A monoaralkylamino group having 7 to 10 carbon atoms such as an amino group, a 4-ethylbenzylamino group, a 4-isopropylbenzylamino group, a dibenzylamino group, a diphenethylamino group, a bis (4-ethylbenzyl) amino group; Examples thereof include a diaralkylamino group having 14 to 20 carbon atoms such as a bis (4-isopropylbenzyl) amino group.

Examples of the substituted or unsubstituted arylamino group are arylamino groups having the same substituents as the above-mentioned alkyl groups, preferably an anilino group, a naphthylamino group, a toluidino group, a xylidino group. ,
6 carbon atoms such as ethylphenylamino, isopropylphenylamino, methoxyphenylamino, ethoxyethylamino, chloroanilino, acetylanilino, methoxycarbonylanilino, ethoxycarbonylanilino, and propoxycarbonylanilino; ~
Examples thereof include diarylamino groups having 12 to 14 carbon atoms, such as a monoarylamino group having 10 carbon atoms, a diphenylamino group, a ditolylamino group, and an N-phenyl-N-tolylamino group.

Examples of the substituted or unsubstituted alkenylamino group are alkenylamino groups having the same substituents as the above-mentioned alkyl groups, preferably allylamino, butenylamino, pentenylamino, hexenylamino. Group, a cyclohexenylamino group, an octadienylamino group, a C3-10 monoalkenylamino group such as an adamantenylamino group, a diallylamino group, a dibutenylamino group, a dipentenylamino group, a carbon number such as a dihexenylamino group 6 to 12 dialkenylamino groups.

Examples of the substituted or unsubstituted acyl group include acyl groups having the same substituents as the above-mentioned alkyl groups, preferably formyl group, methylcarbonyl group, ethylcarbonyl group, n-propyl group. Carbonyl group, iso-propylcarbonyl group, n-butylcarbonyl group, iso-butylcarbonyl group, sec-butylcarbonyl group, t-butylcarbonyl group, n-pentylcarbonyl group, iso-pentylcarbonyl group, neopentylcarbonyl group, 2-methylbutylcarbonyl group,
Phenacyl group, methylphenacyl group, ethylphenacyl group, tolylcarbonyl group, propylphenacyl group, 4-
An acyl group having 7 to 15 carbon atoms such as a t-butylphenacyl group, a nitrobenzylcarbonyl group, a 3-butoxy-2-naphthoyl group, and a cinnamoyl group is exemplified.

Examples of the substituted or unsubstituted alkoxycarbonyl group include alkoxycarbonyl groups having the same substituents as the above-mentioned alkyl groups, preferably methoxycarbonyl, ethoxycarbonyl, n
-Propoxycarbonyl group, iso-propoxycarbonyl group, n-butoxycarbonyl group, iso-butoxycarbonyl group, sec-butoxycarbonyl group, t-butoxycarbonyl group, n-pentoxycarbonyl group, i
so-pentoxycarbonyl group, neopentoxycarbonyl group, 2-pentoxycarbonyl group, 2-ethylhexyloxycarbonyl group, 3,5,5-trimethylhexyloxycarbonyl group, cyclohexyloxycarbonyl group, decalyloxycarbonyl group, etc. 2 to 2 carbon atoms
And 11 alkoxycarbonyl groups.

Examples of the substituted or unsubstituted aralkyloxycarbonyl group include aralkyloxycarbonyl groups having the same substituents as the above-mentioned alkyl groups, preferably benzyloxycarbonyl group and nitrobenzyloxycarbonyl group. A cyanobenzyloxycarbonyl group, a hydroxybenzyloxycarbonyl group,
Methylbenzyloxycarbonyl group, trifluoromethylbenzyloxycarbonyl group, naphthylmethoxycarbonyl group, nitronaphthylmethoxycarbonyl group, cyanonaphthylmethoxycarbonyl group, hydroxynaphthylmethoxycarbonyl group, methylnaphthylmethoxycarbonyl group, trifluoromethylnaphthylmethoxycarbonyl group And an aralkyloxycarbonyl group having 8 to 16 carbon atoms, such as fluorene-9-ylethoxycarbonyl group.

Examples of the substituted or unsubstituted aryloxycarbonyl group include an aryloxycarbonyl group having the same substituent as the above-mentioned aryl group, preferably a phenoxycarbonyl group and a 2-methylphenoxycarbonyl group. And 4-methylphenoxycarbonyl, 4-t-butylphenoxycarbonyl, 2-methoxyphenoxycarbonyl, 4-iso-propylphenoxycarbonyl, and naphthoxycarbonyl.

Examples of the substituted or unsubstituted alkenyloxycarbonyl group include an alkenyloxycarbonyl group having the same substituent as the above-mentioned alkyl group, preferably a vinyloxycarbonyl group, a propenyloxycarbonyl group, 1-butenyloxycarbonyl group, iso-butenyloxycarbonyl group, 1-pentenyloxycarbonyl group, 2-pentenyloxycarbonyl group, 2-methyl-1-butenyloxycarbonyl group, 3-methyl-1-butenyl Oxycarbonyl group, 2
-Methyl-2-butenyloxycarbonyl group, 2,2-
Dicyanovinyloxycarbonyl group, 2-cyano-2-
Methyl carboxylvinyloxycarbonyl group, 2-cyano-2-methylsulfonevinyloxycarbonyl group,
Examples thereof include an alkenyloxycarbonyl group having 3 to 11 carbon atoms such as a styryloxycarbonyl group and a 4-phenyl-2-butenyloxycarbonyl group.

Examples of the substituted or unsubstituted alkylaminocarbonyl group include an alkylaminocarbonyl group having the same substituent as the above-mentioned alkyl group, preferably a methylaminocarbonyl group, an ethylaminocarbonyl group, Propylaminocarbonyl group, butylaminocarbonyl group, pentylaminocarbonyl group, hexylaminocarbonyl group, heptylaminocarbonyl group,
C2-11 monoalkylaminocarbonyl groups such as octylaminocarbonyl group, nonylaminocarbonyl group, 3,5,5-trimethylhexylaminocarbonyl group and 2-ethylhexylaminocarbonyl group; dimethylaminocarbonyl group, diethylaminocarbonyl group , Dipropylaminocarbonyl group, dibutylaminocarbonyl group, dipentylaminocarbonyl group, dihexylaminocarbonyl group, diheptylaminocarbonyl group, dioctylaminocarbonyl group, piperidinocarbonyl group,
Examples thereof include a dialkylaminocarbonyl group having 3 to 17 carbon atoms such as a morpholinocarbonyl group, a 4-methylpiperazinocarbonyl group, and a 4-ethylpiperazinocarbonyl group.

Examples of the substituted or unsubstituted heterocyclic group include a heterocyclic group having the same substituent as the above-mentioned alkyl group, preferably a furanyl group, a pyrrolyl 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,
Indolyl 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,
An unsubstituted heterocyclic group such as a flavonyl group;

Halogen, cyano; methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, decyl, methoxymethyl, ethoxyethyl, ethoxyethyl, trifluoro Alkyl groups such as methyl group; aralkyl groups such as benzyl group and phenethyl group; aryl groups such as phenyl group, tolyl group, naphthyl group, xylyl group, mesyl group, chlorophenyl group and methoxyphenyl group; methoxy group, ethoxy group and propoxy group Group, butoxy group, pentoxy group, hexyloxy group, heptyloxy group, octyloxy group, nonyloxy group, decyloxy group, 2-ethylhexyl group, alkoxy group such as 3,5,5-trimethylhexyloxy group; benzyloxy group, Aralkyl groups such as phenethyloxy groups; Aryloxy groups such as xy group, tolyloxy group, naphthoxy group, xylyloxy group, mesyloxy group, chlorophenoxy group and methoxyphenoxy group; alkenyl groups such as vinyl group, allyl group, butenyl group, butadienyl group, pentenyl group and octenyl group; Alkenyloxy groups such as vinyloxy group, allyloxy group, butenyloxy group, butadienyloxy group, pentenyloxy group, octenyloxy group; methylthio group, ethylthio group, propylthio group, butylthio group, pentylthio group, hexylthio group, heptylthio group, Alkylthio groups such as octylthio, decylthio, methoxymethylthio, ethoxyethylthio, ethoxyethylthio and trifluoromethylthio; aralkylthio such as benzylthio and phenethylthio; Niruchio group,
Arylthio groups such as tolylthio group, naphthylthio group, xylylthio group, mesylthio group, chlorophenylthio group and methoxyphenylthio group; dialkylamino groups such as dimethylamino group, diethylamino group, dipropylamino group and dibutylamino group; acetyl group and propionyl Acyl groups such as methoxycarbonyl and ethoxycarbonyl; aralkyloxycarbonyl such as benzyloxycarbonyl and phenethyloxycarbonyl; phenoxycarbonyl, tolyloxycarbonyl, naphthoxycarbonyl An aryloxycarbonyl group such as a group, a xylyloxycarbonyl group, a mesyloxycarbonyl group, a chlorophenoxycarbonyl group, a methoxyphenoxycarbonyl group; vinyloxy Alkenyloxycarbonyl groups such as rubonyl group, allyloxycarbonyl group, butenyloxycarbonyl group, butadienyloxycarbonyl group, pentenyloxycarbonyl group, octenyloxycarbonyl group; methylaminocarbonyl group, ethylaminocarbonyl group, propylamino Carbonyl group, butylaminocarbonyl group, pentylaminocarbonyl group, hexylaminocarbonyl group, heptylaminocarbonyl group, octylaminocarbonyl group, nonylaminocarbonyl group, 3,5,5-trimethylhexylaminocarbonyl group, 2-ethylhexylaminocarbonyl A monoalkylaminocarbonyl group having 1 to 10 carbon atoms such as a group, a dimethylaminocarbonyl group, a diethylaminocarbonyl group,
Dipropylaminocarbonyl group, dibutylaminocarbonyl group, dipentylaminocarbonyl group, dihexylaminocarbonyl group, diheptylaminocarbonyl group, dioctylaminocarbonyl group, piperidinocarbonyl group, morpholinocarbonyl group, 4-methylpiperazinocarbonyl group Alkylaminocarbonyl groups such as dialkylaminocarbonyl groups having 1 to 20 carbon atoms, such as 4-, 4-ethylpiperazinocarbonyl group; furanyl group, pyrrolyl group, 3
-Pyrrolino, pyrrolidino, 1,3-oxolanyl, pyrazolyl, 2-pyrazolinyl, pyrazolidinyl, imidazolyl, oxazolyl, thiazolyl, 1,2,3-oxadiazolyl, 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, purinyl group, quinolinyl group, isoquinolinyl group, coumarinyl group, cinnolinyl group, quinoxalinyl group, dibenzofuranyl group, carbazolyl group, phenanthronylyl group, phenothiazinyl group,
A heterocyclic group substituted by a substituent such as a heterocyclic group such as a flavonyl group is exemplified.

The naphthalene compound represented by the general formula (1) of the present invention comprises 1,4,5,8-naphthalenetetracarboxylic acid and / or an anhydride thereof, and a compound represented by the formula (3) and / or the formula (4) —NH ₂ (3), B—NH ₂ (4) [A and B in the formula represent the same meaning as A and B in the formula (1). Can be easily obtained by a heat reaction with the amine represented by the formula (1) in the presence / absence of a solvent.

[0063] Further, a 1,4,5,8-naphthalene tetracarboxylic acid and / or anhydride thereof, Q of formula _{(5) Q-NH 2 (} 5) wherein is, A in the formula (1) Or the meaning of either of B. With an amine represented by the formula (6):

[0064]

Embedded image

[Q in the formula represents the same meaning as Q in the formula (5). After producing the imide compound represented by the formula (1), Q′-NH ₂ (7) wherein Q ′ represents either A or B in the formula (1). With an amine represented by the formula (8)

[0066]

Embedded image

[Q and Q ′ in the formula represent A in the formula (1)
Or B represents any meaning. ], That is, the compound of the formula (1) can be easily obtained.

Specific examples of the naphthalene compound represented by the general formula (1) include compounds (1-1) shown in Table 1.
To (1-55).

[0069]

[Table 1]

[0070]

[Table 2]

[0071]

[Table 3]

[0072]

[Table 4]

[0073]

[Table 5]

[0074]

[Table 6]

In order to improve the recording characteristics and the like, the absorption maximum at a wavelength of 350 nm to 550 nm is obtained.
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%.

When 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 acetylacetonate-based, bisdithio-α-diketone-based and bisphenyldithiol-based bisdithiol-based, thiocateconal-based, salicylaldehyde oxime-based, and thiobisphenolate-based. 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 thermal decomposition of the compound by thermal weight loss analysis (TG analysis). Examples thereof include a metal-based anti-knocking agent and a metallocene compound. And metal compounds such as acetylacetonate-based metal complexes. Examples of the metal anti-knocking agent include tetraethyl lead, other lead compounds, and Simantrene [Mn (C ₅ H ₅ ) (CO)
Examples of Mn-based compounds such as [ ₃ ] and metallocene compounds include iron biscyclopentadienyl complex (ferrocene), Ti, V, Mn, Cr, Co, Ni, M
o, Ru, Rh, Zr, Lu, Ta, W, Os, Ir,
There are biscyclopentadienyl complexes such as Sc and Y.
Among them, ferrocene, ruthenocene, osmocene, nickelocene, titanocene and derivatives thereof have good thermal decomposition promoting effects.

Other iron-based metal compounds include metallocenes, 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 thereof 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 quencher and the compound thermal decomposition accelerator described above may be used singly or as a mixture of other types as required.

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

When the recording layer is formed on the substrate, in order to improve the solvent resistance, the reflectance, the 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.

When 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,
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, a material having 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 ultraviolet-curable resin can be formed by applying a coating solution after preparing the coating solution as it is or by dissolving it in an appropriate solvent, and irradiating 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 of forming the protective layer, a coating method such as a spin coating method or a casting method, a sputtering method, a chemical vapor deposition method, or the like is used as in the case of the recording layer. Among them, the spin coating method is preferable.

The thickness of the protective layer is generally 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.

A label or the like can be further printed on the protective layer.

Further, a means such as bonding a protective sheet or substrate to the reflective layer surface, or bonding two optical recording media with the reflective layer surfaces facing each other inside 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 having a wavelength 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 wavelength of 48 nm.
8nm argon laser, wavelength 410nm GaN
And a semiconductor laser that oscillates a second harmonic of 425 nm of an infrared laser having a wavelength of about 850 nm. According to the present invention, high-density recording and reproduction can be performed at one wavelength or a plurality of wavelengths selected from these.

[0097]

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 at 2,000 rpm on a disk-shaped substrate having a thickness of 0.6 mm and a thickness of 0.6 mm, 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 was performed at 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 50%, the error rate was 8 cps, and the jitter was 9.0%.

The recorded medium was subjected to an accelerated deterioration test (humidity: 85% RH, 80 ° C. for 100 hours), and the reflectance and error rate after the test were measured.
1% change in reflectance from initial value, 1cp change in error rate
s, the jitter change was as small as 0.5%, and it was confirmed to have excellent durability.

Examples 2 to 9 An optical recording medium was produced in the same manner as in Example 1 except that the compounds (1-2) to (1-9) were used for the recording layer. The signal was reproduced. In each case, a good value was obtained with a reflectance of 40% or more, an error rate of 11 cps or less, and a 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.

Example 10 Instead of 0.2 g of the compound (1-1) used in Example (1), 0.1 g of the compound (1-3) and 0.1 g of the compound (1-8) 0.
An optical recording medium was manufactured in the same manner as in Example 1 except that 1 g was used, and pits were written and recorded, and then signal reproduction was performed. As a result, the reflectance was 43% and the error rate was 10
It showed good values of cps and jitter of 9.6%.

The change in reflectance after the accelerated deterioration test was 1
%, The change in error rate was 1 cps, and the change in jitter was as small as 0.4%, confirming that the device had excellent durability.

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

[0111]

[Table 7]

Example 11 Instead of 0.2 g of the compound (1-1) used in Example (1), 0.1 g of the compound (1-10) and the compound (1-2)
4) An optical recording medium was prepared in the same manner as in Example 1 except that 0.05 g of the compound (1-39) and 0.05 g of the compound (1-39) were used. As a result, the reflectance is 45%, the error rate is 9 cps,
A good value of 9.3% was exhibited.

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 0.3%.

Example 12 Instead of 0.2 g of the compound (1-1) used in Example (1), 0.1 g of the compound (1-47) and the compound (1-47)
48) 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, good values were obtained with a reflectance of 48%, an error rate of 8 cps, and a jitter of 9.2%.

The change in reflectance after the accelerated deterioration test was 1
%, The change in error rate was 1 cps, and the change in jitter was as small as 0.2%, confirming that it had excellent durability.

Examples 13 to 58 Naphthalene compounds (1-10) to (1-55) were added to the recording layer.
An optical recording medium was manufactured in the same manner as in Example 1, except that pits were used, and pits were written and recorded, and then signal reproduction was performed. As a result, the reflectance was 40% or more, and the error rate was 11
Good values were obtained, that is, cps or less and jitter of 10% or less.

As a result of the accelerated deterioration test performed in the same manner as in Example 1, the change in reflectance from the initial value was 2% or less, the change in error rate was 2 cps or less, and the change in jitter was 1% or less.
It was confirmed that it had excellent durability.

As shown in Table 2 and Examples 11 to 58, the optical recording media of the present invention all have high reflectivity and are excellent in recording characteristics and durability.

Thus, the recording layer containing the naphthalene compound having the structure defined in the present invention can record signals with a blue laser. Can be used.

[0120]

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 record and reproduce with a 00 nm laser.

[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 the 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 Prefecture Inside of Mitsui Chemicals Co., Ltd. EA22 EA25 EA32 EA43 FA01 FA12 FB42 4C065 AA07 AA18 BB09 CC09 DD02 EE02 HH09 JJ04 KK09 LL04 PP03 PP06 PP09 PP10 PP12 PP13 PP14 PP16 PP17 5D029 JA04 JC03 JC17

Claims (3)

[Claims] 1. An optical recording medium having at least a recording layer and a reflective layer on a substrate, wherein the recording layer has a general formula (1)
An optical recording medium containing a naphthalene compound represented by the formula: Embedded image [Wherein, A and B each independently represent an aromatic hydrocarbon group or a heterocyclic group which may have a substituent. ] 2. The optical recording medium according to claim 1, wherein the naphthalene compound is represented by the following formula (2). Embedded image [Wherein, Z ₁ and Z ₂ each independently represent a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group, an aralkyl group, an aryl group, an alkoxy group, an aralkyloxy group, an aryloxy group, an alkenyl group. An alkenyloxy group, an alkylthio group, an aralkylthio group, an arylthio group, an alkylamino group, an aralkylamino group, an arylamino group, an alkenylamino group, an acyl group, an alkoxycarbonyl group, an aralkyloxycarbonyl group,
An aryloxycarbonyl group, an alkenyloxycarbonyl group, an alkylaminocarbonyl group, a monocyclic or polycyclic aromatic hydrocarbon group substituted with a heterocyclic group, or a heterocyclic group. ] 3. 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.