Preparation of alkyl, alkenyl, and alkynyl chlorides

US5196611A · kind A · utility

Assignee

• BASF SE

Inventors

• Jochem Henkelmann · Mannheim, DE
• Irene Troetsch-Schaller · Bissersheim, DE
• Thomas Wettling · Schifferstadt, DE
• Thomas-Michael Kahl · Münstermaifeld, DE
• Leopold Hupfer · Friedelsheim, DE
• Wolfgang Franzischka · Bischofswerda, DE
• Hermann Koehler · Beindersheim, DE

Key dates

• Filing date: May 6, 1992
• Grant date: Mar 23, 1993
• Expiry date: May 6, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/22
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The preparation of an alkyl, alkenyl, or alkynyl chloride by the reaction of a corresponding alcohol with phosgene or thionyl chloride in the presence of a phosphine oxide acting as catalyst, wherein the catalyst used is an aliphatic, cycloaliphatic, or cyclic/aliphatic phosphine oxide.