N.sub.1 -substituted 1H-benzytriazole hydroxyethyl sulfone compounds, a process for their preparation and their use for the preparation of dyestudds

US4851542A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gunther Schwaiger · Frankfurt, DE
• Hartmut Springer · Königstein, DE

Key dates

• Filing date: Jul 23, 1987
• Grant date: Jul 25, 1989
• Expiry date: Jul 23, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/5033
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

N.sub.1 -substituted 1H-benzotriazole hydroxyethyl sulfone compounds, a process for their preparation and their use for the preparation of dyestuffs. Compounds of the general formula ##STR1## in which R is hydrogen or alkyl which has 1 to 6 carbon atoms and can be substituted by hydroxy, sulfo, carboxy, phosphono and/or cyano, W denotes a divalent, optionally substituted aliphatic radical, (C.sub.5 -C.sub.10)-cycloaliphatic radical which is optionally substituted by alkyl, aliphatic-(C.sub.5 -C.sub.8)-cycloaliphatic radical which is optionally substituted by alkyl, optionally substituted araliphatic radical or optionally substituted aromatic carbocyclic radical, it being possible for the aliphatic radicals in W to be interrupted by hetero groups of the formulae --O--, --S--, --SO.sub.2 --, --CO--, 1,4-piperidino, --NH-- and --N(R')-- in which R' is an alkyl group which has 1 to 6 carbon atoms and can be substituted, or is an alkanoyl group having 2 to 5 C atoms, and/or for the aliphatic radicals and aryl radicals to be attached to one another through such a hetero group, and R* denotes hydrogen, alkyl having 1 to 6 carbon atoms, alkoxy having 1 to 5 carbon atoms, halogen, carboxy o…