Method for producing thiochloroformates

US6162939A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans-Jurgen Weyer · Frankenthal (Pfalz), DE
• Armin Stamm · Mainz, DE
• Theodor Weber · Ludwigshafen, DE
• Jochem Henkelmann · Mannheim, DE

Key dates

• Filing date: Feb 17, 2000
• Grant date: Dec 19, 2000
• Expiry date: Feb 17, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C329/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A catalyst used for preparing thiochloroformates by reacting thiols with phosgene is a cyclic urea or cyclic thiourea which may be in the form of a salt obtainable by reaction with a hydrohalic acid or phosgene.