One pot diazotization, coupling and quaternization of aminotriazoles

In the preparation of a quaternized dyestuff of the formula ##STR23## in which R.sup.1 and R.sup.2 each is a C.sub.1 - to C.sub.4 -alkyl or alkenyl radical, or a C.sub.1 -C.sub.4 -alkyl or alkenyl radical substituted by halogen, hydroxyl, cyano, C.sub.1 - to C.sub.4 -alkoxy, C.sub.1 - to C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.3 -alkylcarbonyloxy, aminocarbonyl, phenoxy, benzyloxy, benzoyloxy, mono- or di-(C.sub.1 to C.sub.2 -alkyl)-amino, mono- or di-(C.sub.1 - to C.sub.2 -alkyl)-aminocarbonyl, phenylalkyloxy, phenoxycarbonyloxy or phenylaminocarbonyloxy;

• a benzyl, .alpha.- or .beta.-phenethyl or .alpha.-, .beta.- or .gamma.-phenylpropyl radical;
• or a benzyl, .alpha.- or .beta.-phenylethyl or .alpha.-, .beta.- or .gamma.-phenylpropyl radical substituted by C.sub.1 - to C.sub.4 -alkyl or by any of the substituents set forth in connection with alkyl;
• R.sub.3 is hydrogen;
• a C.sub.1 - to C.sub.4 -alkyl radical;
• a C.sub.1 - to C.sub.4 -alkyl radical substituted as in R.sup.1 and R.sup.2 ;
• a cyclohexyl, phenyl, naphthyl, benzyl, .alpha.- or .beta.-phenylethyl or .alpha.-, .beta.- or .gamma.-phenylpropyl radical;
• or a cyclohexyl, phenyl, naphthyl, benzyl, .alpha.- or .beta.-phenylethyl or .alpha.-, .beta.- or .gamma.-phenylpropyl radical substituted by C.sub.1 to C.sub.4 -alkyl or by any of the substituents set forth in connection with alkyl;
• K is the radical of a coupling component HK, and p1 X is an anion,
• wherein an aminotriazole of the formula ##STR24## is diazotized and coupled to a coupling component HK to form an intermediate dyestuff of the formula ##STR25## and the intermediate dyestuff is quaternized with an alkylating or aralkylating agent capable of providing the radicals R.sup.1 and R.sup.2 in a medium also providing the anion X.sup.-, the improvement which comprises effecting the coupling at a pH of 4 to 6 and thereafter, without isolation of the intermediate dyestuff, effecting the quaternization.