ES391665A1 - Basic monoazo dyestuffs and processes for their manufacture - Google Patents

Abstract

Procedure for the preparation of basic dyes, devoid of acidic hydro-lubricating groups and corresponding to the general formula ** (See formula) ** in which the benzene ring A can be substituted by halogen atoms or groups of alkyl, alkoxy, nitro, cyano, acylamino, alkylsulfonyl, or N-alkyl- and N, N-dialkyl sulfonamido; V stands for hydrogen, alkyl, or alkoxy; W stands for hydrogen, halogen, alkyl, trifluoromethyl, alkoxy, aryloxy, arylmercapto or acylamino; Y stands for an alkyl radical, which is optionally substituted, for example, by hydroxyl, mercapto, cyano, alkoxy, cyanoalkoxy, alkoxyalkoxy, aryl, aryloxy, arylthio, acyl, acyloxy, acylamino or a carbonamide group (optionally mono or di-alkylated together with nitrogen); n means an integer valued at most 4; X signifies an anion; and B forms a hexagonal ring, which may eventually contain one or two more nitrogen atoms and/or a juxtacondensed benzene ring, characterized by a) coupling a diazolated amine of the formula ** (See formula) ** with a coupling compound of the formula ** (See formula) ** O well b) reacting a compound of the formula ** (See formula) ** in which Z means the cleavable radical of an organic or inorganic acid, in particular a halogen atom or a sulfate group, with an amine of the formula ** (See formula) ** in which case the anion Z can subsequently be replaced, if it is not identical to the final material anion X defined in formula 1, by reaction with an HX acid; in formulas 2 to 5, the symbols A, V, W, Y, X, B and n have the same meaning as in claim 1. (Machine-translation by Google Translate, not legally binding)