Benzofurane benzoxazoles
First Claim
1. A benzofurane compound of the formula ##STR21## in which R1, R2 and R3 denote hydrogen, alkyl, alkoxy or halogen,R4 denotes hydrogen, aryl or alkyl,R5 denotes hydrogen, halogen, or alkyl,R6 denotes hydrogen, halogen, alkyl, alkoxy, alkylsulphonyl, phenylsulphonyl, CN, CF3, COOR, SO3 R, CONRR'"'"' or SO2 NRR'"'"',R7 denotes hydrogen, halogen, alkyl or alkoxy,R denotes alkyl andR'"'"' denotes alkyl or H,R8 denotes aryl, alkyl, aralkyl, styryl or alkoxy, andR9 denotes hydrogen, CN, COOR, CONRR'"'"' or R8, or R8 and R9 together denote a fused-on hydroaromatic or aromatic ring, andthe abovementioned hydrocarbon radicals and alkoxy radicals and the optionally fused-on ring systems optionally being substituted by substituents customary in brightener chemistry.
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Accused Products
Abstract
Compounds of the formula ##STR1## in which R1, R2 and R3 denote hydrogen, alkyl, alkoxy or halogen,
A denotes aryl or a radical of the formula ##STR2## wherein R8 denotes aryl, alkyl, aralkyl, styryl or alkoxy,
R9 denotes hydrogen, CN, COOR, CONRR'"'"' or R8 and X denotes N or C(R10),
R4 and R10 denote hydrogen, alkyl or aryl,
R5, R6 and R7 denote hydrogen, halogen or alkyl, inter alia,
R denotes alkyl and
R'"'"' denotes R or H,
are valuable optical brighteners for polyesters, polyamides, cellulose esters and polyacrylonitrile.
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Citations
2 Claims
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1. A benzofurane compound of the formula ##STR21## in which R1, R2 and R3 denote hydrogen, alkyl, alkoxy or halogen,
R4 denotes hydrogen, aryl or alkyl, R5 denotes hydrogen, halogen, or alkyl, R6 denotes hydrogen, halogen, alkyl, alkoxy, alkylsulphonyl, phenylsulphonyl, CN, CF3, COOR, SO3 R, CONRR'"'"' or SO2 NRR'"'"', R7 denotes hydrogen, halogen, alkyl or alkoxy, R denotes alkyl and R'"'"' denotes alkyl or H, R8 denotes aryl, alkyl, aralkyl, styryl or alkoxy, and R9 denotes hydrogen, CN, COOR, CONRR'"'"' or R8, or R8 and R9 together denote a fused-on hydroaromatic or aromatic ring, and the abovementioned hydrocarbon radicals and alkoxy radicals and the optionally fused-on ring systems optionally being substituted by substituents customary in brightener chemistry.
Specification
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- Resources
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Current AssigneeBayer AG
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Original AssigneeBayer AG
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InventorsWehling, Bernhard
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Primary Examiner(s)Sutto, Anton H.
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Application NumberUS06/141,831Time in Patent Office512 DaysField of Search548/224US Class Current548/224CPC Class CodesC07D 307/79 with only hydrogen atoms, h...C07D 413/10 linked by a carbon chain co...
