Preparation of sulfonamides

US4490306A · kind A · utility

Assignee

• BASF SE

Inventor

• Rolf-Dieter Acker · Leimen, DE

Key dates

• Filing date: Jan 17, 1983
• Grant date: Dec 25, 1984
• Expiry date: Jan 17, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Sulfonamides are prepared by reacting ammonia or an amine with a halosilane and then reacting the resulting silylamine with sulfuryl chloride in the presence of a solvent which is inert under the reaction conditions. The sulfonamides are used as intermediates for drugs and crop protection agents, and are starting materials for the preparation of alkylamidosulfonyl chlorides.