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Benzofurane benzoxazoles

  • US 4,289,887 A
  • Filed: 04/21/1980
  • Issued: 09/15/1981
  • Est. Priority Date: 05/11/1979
  • Status: Expired due to Term
First Claim
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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 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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