Cationic 1,3,4-thiadiazole dyestuffs

Claim 2

A cationic thiadiazolyldiphenylamine dyestuff of the formula (I) ##STR35## in which R 1 and R 2 , independently of one another, denote hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl or a heterocycle, or R 1 and R 2 together with the nitrogen atom to which they are bound form a heterocycle, R 3 denotes alkyl, alkenyl, cycloalkyl or aralkyl, R 4 and R 5 , independently of one another, denote hydrogen, alkyl, alkoxy or halogen, R 6 denotes hydrogen, alkyl, alkoxy, aryloxy, arylamino, halogen, cyano, alkoxycarbonyl or nitro, or R 5 and R 6 together form a --CH═CH--CH═CH-- bridge, R 7 denotes hydrogen, alkyl, cycloalkyl, alkenyl, aralkyl or aryl, R 8 and R 9 , independently of one another, denote hydrogen, alkyl, alkoxy, aryloxy, halogen, cyano, alkoxycarbonyl, nitro or C 1 -C 4 -acylamino, or R 4 and R 7 form a 2- or 3-membered carbon bridge which is unsubstituted or substituted by 1 to 3 alkyl groups, or R 4 and R 9 form a direct bond or an oxygen bridge, and X.sup.⊖ denotes an anion, said heterocycle being defined as a thienyl, furyl or pyridyl radical, said alkyl, alkenyl, cycloalkyl, aralkyl, aryl, alkoxy and heterocyclic radicals being unsubstituted or substituted by cyano, hydroxyl, fluorine, chlorine, bromine, nitro, alkyl, monoalkylamino, dialkylamino, alkoxy, phenyl, acyloxy, acylamino, alkoxycarbonyl, alkoxycarbonyloxy, carboxyl groups, ammonium groups or pyridinium groups.

Claim 3

A cationic thiadiazolyldiphenylamine dyestuff according to claim 1 in which at least one of the radicals R 4 , R 5 , R 6 , R 8 and R 9 is not hydrogen or R 5 and R 6 together form a --CH═CH--CH═CH-- bridge.

Claim 4

A cationic thiadiazolyldiphenylamine dyestuff according to claim 1 in which in formula (I) R 2 denotes hydrogen, or R 1 and R 2 , independently of one another, each denotes a C 1 -C 8 -alkyl radical which is unsubstituted or substituted by hydroxyl, halogen, cyano, C 1 -C 4 -alkoxy, aminocarbonyl or C 1 -C 4 -alkoxycarbonyl, or denotes allyl, cyclopentyl, cyclohexyl, a benzyl or phenethyl radical which is unsubstituted or substituted by halogen, cyano, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, or denotes a 1,1-dioxotetrahydrothienyl radical, tetrahydrofurylmethyl, pyridylmethyl or pyridylethyl radical, or R 1 and R 2 together with the nitrogen atom to which they are bound denote a pyrrolidino, piperidino or morpholino radical which is unsubstituted or substituted by up to 4 methyl groups or denote a piperazino radical which is unsubstituted or substituted on nitrogen by methyl, ethyl, hydroxyethyl or aminoethyl, R 3 denotes C 1 -C 4 -alkyl which is unsubstituted or substituted by hydroxyl, halogen, cyano, C 1 -C 4 -alkoxy, aminocarbonyl or C 1 -C 4 -alkoxycarbonyl, or denotes allyl or a benzyl or phenethyl radical which is unsubstituted or substituted by halogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, R 4 and R 5 , independently of one another, denote hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy or halogen, R 6 denotes hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -aryloxy, C 6 -C 10 -arylamino, halogen, cyano, C 1 -C 4 -alkoxycarbonyl or nitro, or R 5 and R 6 together form a --CH═CH--CH═CH-- bridge, R 7 denotes hydrogen, C 1 -C 4 -alkyl which is unsubstituted or substituted by hydroxyl, halogen, cyano, C 1 -C 4 -alkoxy, aminocarbonyl or C 1 -C 4 -alkoxycarbonyl, or denotes allyl, cyclopentyl, cyclohexyl or a benzyl, phenethyl or phenyl radical, which is unsubstituted or substituted by halogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, R 8 and R 9 , independently of one another, each denotes hydrogen, C 1 -C 4 -alkyl which is unsubstituted or substituted by hydroxyl, halogen, cyano or C 1 -C 4 -alkoxy, or denotes C 1 -C 4 -alkoxy, C 6 -C 10 -aryloxy, halogen, cyano, C 1 -C 4 -alkoxycarbonyl, nitro or C 1 -C 4 -alkanoylamino, or R 4 together with R 7 form a 2- or 3-membered carbon bridge which may be unsubstituted or substituted by 1 to 3 methyl or ethyl groups, or R 4 together with R 9 form a direct bond or an oxygen bridge, and X.sup.⊖ denotes an anion.

Claim 5

A cationic thiadiazolyldiphenylamine dyestuff according to claim 1 in which in formula (I) R 2 denotes hydrogen, or R 1 and R 2 , independently of one another, denote methyl, ethyl, propyl, butyl, methylpropyl, pentyl, methylbutyl, dimethylpropyl, hexyl, hydroxyethyl, hydroxypropyl, chloroethyl, cyanomethyl, cyanoethyl, cyanopropyl, methoxyethyl, ethoxyethyl, methoxypropyl, aminocarbonylmethyl, aminocarbonylethyl, methoxycarbonylmethyl, methoxycarbonylethyl, allyl, cyclohexyl, benzyl, phenethyl, methylbenzyl, chlorobenzyl, methoxybenzyl, 1,1-dioxotetrahydrothienyl, furfuryl, 2- or 4-pyridylmethyl or 2- or 4-pyridylethyl, or R 1 and R 2 together with the nitrogen atom to which they are bound denote pyrrolidino, piperidino, piperazino or morpholino which is unsubstituted or substituted on nitrogen by methyl, ethyl, hydroxyethyl or aminoethyl, R 3 denotes methyl, ethyl, propyl, butyl, hydroxyethyl, hydroxypropyl, hydroxybutyl, chloroethyl, cyanomethyl, cyanoethyl, cyanopropyl, methoxyethyl, ethoxyethyl, methoxypropyl, aminocarbonylethyl, methoxycarbonylethyl, ethoxycarbonylethyl, allyl, benzyl, phenethyl, methylbenzyl, chlorobenzyl or methoxybenzyl, R 4 and R 5 , independently of one another, denote hydrogen, methyl, ethyl, methoxy, ethoxy or chlorine, R 5 and R 6 together form a --CH═CH--CH═CH bridge, R 6 denotes hydrogen, methyl, ethyl, methoxy, ethoxy, phenoxy, anilino, fluorine, chlorine, bromine, cyano, methoxycarbonyl, ethoxycarbonyl or nitro, or R 7 denotes hydrogen, methyl, ethyl, propyl, butyl, hydroxyethyl, hydroxypropyl, chloroethyl, cyanomethyl, cyanoethyl, cyanopropyl, methoxyethyl, ethoxyethyl, aminocarbonylethyl, methoxycarbonylethyl, ethoxycarbonylethyl, allyl, benzyl, phenethyl, methylbenzyl, phenyl, chlorophenyl, methylphenyl or methoxyphenyl, R 8 and R 9 , independently of one another, denote hydrogen, methyl, ethyl, methoxy, ethoxy, phenoxy, chlorine, cyano, methoxycarbonyl, nitro, acetylamino or propionylamino, or R 4 together with R 7 denote a --CH 2 --CH 2 --, --CH 2 --CH 2 --CH 2 --, --CH 2 --CH(CH 3 )-- or --CH(CH 3 )--CH 2 --C(CH 3 ) 2 -- bridge, or R 4 together with R 9 denote a direct bond or an oxygen bridge, and X.sup.⊖ denotes an anion.

Claim 6

A cationic thiadiazolyldiphenylamine dyestuff according to claim 1 in which in formula (I) R 1 and R 2 , independently of one another, denote methyl, ethyl, propyl, butyl, hydroxyethyl, hydroxypropyl, cyanoethyl, methoxyethyl or ethoxyethyl, or R 1 and R 2 together with the nitrogen atom to which they are bound denote morpholino, R 3 denotes methyl, ethyl, hydroxyethyl, hydroxypropyl or cyanoethyl, R 4 denotes methyl, methoxy, ethoxy or chlorine, R 5 denotes hydrogen, R 6 denotes hydrogen, methyl, chlorine, methoxy or cyano, or R 5 and R 6 together form a --CH═CH--CH═CH-- bridge, R 7 denotes hydrogen, methyl, hydroxyethyl, hydroxypropyl, cyanoethyl, R 8 and R 9 , independently of one another, denote hydrogen, methyl, methoxy, chlorine, cyano, nitro or acetylamino, and X.sup.⊖ denotes an anion.

Claim 7

A cationic thiadiazolyldiphenylamine dyestuff according to claim 5 in which R 7 denotes hydrogen.

Claim 8

An anhydro base of formula (II) ##STR36## in which R 1 to R 6 , R 8 and R 9 have the meaning given in claim 1.