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Distyryl compounds

  • US 4,317,782 A
  • Filed: 02/22/1979
  • Issued: 03/02/1982
  • Est. Priority Date: 02/22/1978
  • Status: Expired due to Term
First Claim
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1. Distyryl compounds of the formula (II) ##STR35## wherein B denotes 1,4-phenylene, 4,4'"'"'-biphenylene, 1,4- and 2,6-naphthylene, 9,10-dihydro-2,7-phenanthrenylene or 2,7-dibenzofuranylene,R5 denotes a radical of the formula ##STR36## R6 denotes hydrogen, chlorine, C1 -C4 -alkyl, sulpho, carboxyl, C1 -C4 -alkoxy, C1 -C4 -alkoxycarbonyl, cyano or a radical of the formula ##STR37## R7 and R8 denote hydrogen, chlorine, C1 -C4 -alkyl, phenyl which is optionally substituted by methyl, methoxy or chlorine, C1 -C4 -alkoxy, C1 -C4 -alkoxycarbonl, cyano, C1 -C4 -alkylsulphonyl, C1 -C4 -alkylcarbonyl, hydroxyl or carboxyl, R9 and R10 denote C1 -C4 -alkyl, benzyl, phenyl which is optionally substituted by methyl, methoxy or chlorine or a group of the formula (OCH2 CH2)n -OR11 whereinR11 is hydrogen, C1 -C4 -alkyl, benzyl or phenyl andn is 0 to 7,it being possible for the phosphonic acid group also to be in the form of a salt.

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