Ketosultams

US4709026A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Albert Bender · Mainz, DE
• Dieter Guenther · Kelkheim, DE

Key dates

• Filing date: Feb 20, 1986
• Grant date: Nov 24, 1987
• Expiry date: Feb 20, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D455/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Method and composition for a ketosultam of the general formula ##STR1## in which R.sub.1 and R.sub.2 are identical or different and each denote hydrogen, (C.sub.1 to C.sub.8)-alkyl, which is optionally substituted by one or several halogen atoms, hydroxy groups, cyano groups or (C.sub.1 to C.sub.4)-alkoxy groups, or phenyl, R.sub.3 denotes hydrogen or a (C.sub.1 to C.sub.4)-alkyl group or (C.sub.1 to C.sub.4)-alkoxy group, n is a number from 1 to 4, or R.sub.1, R.sub.2 and R.sub.3, together with the corresponding aminophenyl group, denote julolidinyl or N-(C.sub.1 to C.sub.3)-alkylcarbazol-3-yl. The compounds are used in the preparation of sensitizers and dyes.