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GB1433574A - Bis-coumarins - Google Patents

Bis-coumarins

Info

Publication number
GB1433574A
GB1433574A GB3051074A GB3051074A GB1433574A GB 1433574 A GB1433574 A GB 1433574A GB 3051074 A GB3051074 A GB 3051074A GB 3051074 A GB3051074 A GB 3051074A GB 1433574 A GB1433574 A GB 1433574A
Authority
GB
United Kingdom
Prior art keywords
alkyl
formula
hydrogen
compound
aryl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3051074A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1433574A publication Critical patent/GB1433574A/en
Expired legal-status Critical Current

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  • Plural Heterocyclic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

1433574 Bis-coumarin derivatives BAYER AG 10 July 1974 [11 July 1973] 30510/74 Heading C2C Novel bis-coumarin derivatives of the formula wherein R 1 is aralkyl, alkyl or aryl; R 2 is hydrogen, cyano, carboxylic acid or ester, carbonamide, acylamino, alkoxy, or R 1 ; or R 1 and R 2 together denote a fused hydroaromatic or aromatic ring; R 3 is hydrogen, halogen, alkyl or aryl; R 4 is hydrogen, alkyl or aryl; R 5 is halogen or alkyl; X is a direct bond or a bridge member; n is 0 or 1 and m is 0, 1 or 2, are prepared by either (i) condensing 2 mols of a compound of the formula wherein Z is oxygen or NR 8 ; Y is hydrogen, (C 1 -C 4 ) alkyl or SO 2 R 9 ; R 8 is optionally substituted phenyl; R 9 is phenyl or dialkylamino, with 1 mol of a compound of the formula wherein W is carboxyl or cyano; (ii) triazolyzing a compound of the formula or (iii) oxidately cyclizing a compound of the formula wherein R 1 <SP>1</SP> and R 2 <SP>1</SP> together denote a fused aromatic ring. The novel compounds are useful as optical brightening agents.
GB3051074A 1973-07-11 1974-07-10 Bis-coumarins Expired GB1433574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732335218 DE2335218A1 (en) 1973-07-11 1973-07-11 BIS-CUMARINE

Publications (1)

Publication Number Publication Date
GB1433574A true GB1433574A (en) 1976-04-28

Family

ID=5886549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3051074A Expired GB1433574A (en) 1973-07-11 1974-07-10 Bis-coumarins

Country Status (8)

Country Link
JP (1) JPS5043127A (en)
BE (1) BE817471A (en)
CH (1) CH597296A5 (en)
DE (1) DE2335218A1 (en)
FR (1) FR2236866B1 (en)
GB (1) GB1433574A (en)
IT (1) IT1015699B (en)
NL (1) NL7409221A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH620322B (en) * 1976-03-26 Ciba Geigy Ag USE OF 3-PHENYL-7- (V-TRIAZOL-2-YL) CUMARINES FOR THE OPTICAL LIGHTENING OF ORGANIC MATERIALS.
DE3026958A1 (en) * 1980-07-16 1982-02-04 Bayer Ag, 5090 Leverkusen 2- (2,2,2-TRICHLOR-1-HYDROXY-ETHYL) -PHENOLE, A METHOD FOR THE PRODUCTION THEREOF AND THE USE THEREOF FOR THE PRODUCTION OF SALICYL ALDEHYDES

Also Published As

Publication number Publication date
BE817471A (en) 1975-01-10
DE2335218A1 (en) 1975-01-30
NL7409221A (en) 1975-01-14
FR2236866A1 (en) 1975-02-07
CH597296A5 (en) 1978-03-31
IT1015699B (en) 1977-05-20
FR2236866B1 (en) 1978-03-24
JPS5043127A (en) 1975-04-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee