Heterocyclic azo dyes with couplers having sulfoaralkyl groups

Claim 1

A compound of the formula: ##STR74## wherein the thiophen-2-yl radical is unsubstituted or substituted with 1-3 groups selected from alkyl, cyano, alkoxycarbonyl, alkanoyl, alkylsulfonyl, arylsulfonyl, carbamoyl, alkylcarbamoyl, aryl, halogen, sulfamoyl, alkylsulfamoyl, and formyl; the coupler C is selected from ##STR75## wherein each R 1 and Z is selected independently from alkyl, alkoxy, alkenyl of 2-6 carbons, halogen, alkanoylamino, and alkylthio; R 2 is selected from hydrogen, alkyl, alkenyl of 2-6 carbons, aryl, cycloalkyl, and ##STR76## R 3 and R 4 are each selected from hydrogen and alkyl; M is H + , Na + , K + , or NH 4 + ; n is 1-6; and m is 0, 1 or 2; and wherein all of the above defined alkyl, alkoxy, alkylene, alkenyl and cyclic moieties in the definitions of R 1 , R 2 and Z are unsubstituted or substituted with 1-3 substituents selected from hydroxy, alkoxy, aryl, aryloxy, cyclohexyl, furyl, alkylcyclohexyl, aroyloxy, alkoxycarbonyl, alkanoyloxy, sulfamoyl, SO 2 NH(aryl), SO 2 NH(alkyl), SO 2 N(dialkyl), NHCOO(alkyl), NHCONH(alkyl), alkanoylamino, alkylsulfonamido, succinimido, glutarimido, phthalimido, 2-pyrrolidono, cyano, carbamoyl, alkylcarbamoyl, alkoxyalkoxy, alkylthio, halogen, arylthio, alkylsulfonyl and arylsulfonyl.