Cationic diphenylamine dyestuffs and their anhydrobases

摘要

Cationic thiadiazoldiphenylamine dyes of formula (I) are new: in which R<1> and R<2> independently = H, alkyl, alkenyl, cycloalkyl, aralkyl or a heterocycle which is optionally bound via a methylene or ethylene bridge, or R<1> and R<2> together with the N atom to which they are bound may form a heterocyclic ring; R<3> = alkyl, alkenyl, cycloalkyl or aralkyl; R<4> and R<5> independently = H, alkyl, alkoxy or halogen; R<4>a = H or R<4> and R<4>a together may form a -CH=CH-CH=CH- bridge; R<5> = H, alkyl, alkoxy, aryloxy, arylamino, halogen, CN, alkoxycarbonyl or nitro; R<6> and R<8> independently = alkyl, alkoxy or halogen and R<8> may also = H; R<7> = alkoxy, aryloxy or R<10>R<11>, or R<6> and R<7> together may form a bridging group -OCH2O-, -CH2CH2-O-, -CH2CH2-N(R<10>)-, -CH2-CH2-CH2-N(R<10>)- or -O-CH2CH2-N(R<10>)- ; R<10> and R<11> independently = alkyl, alkenyl, cycloalkyl, aralkyl, aryl or the residue of a heterocycle and R<10> may also = H, or R<10> and R<11> together with the N atom to which they are bound may form a heterocyclic ring; wherein if R<7> = NR<10>R<11>, then R<6> and R<8> independently have the meanings given above and may also = H and R<5> has the meanings give above and may also = NHCOR<12> or NHSO2R<13>; R<12> and R<13> independently = alkyl, alkenyl, cycloalkyl, aryl, a heterocyclic residue, alkoxy or NR<10>R<11> and R<12> may also = H; and X<-> = an anion. Also claimed are anhydro bases of formula (II): in which R<1>-R<9> have the meanings given for (I).