Process for the preparation of urethanes

US4297501A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Robert Becker · Warsaw, US
• Johann Grolig · Leverkusen, DE
• Christian Rasp · Cologne, DE

Key dates

• Filing date: Feb 27, 1980
• Grant date: Oct 27, 1981
• Expiry date: Feb 27, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C269/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for producing urethanes by reacting primary amines, carbon monoxide and organic hydroxyl compounds in the presence of molecular oxygen and/or organic nitro compounds as oxidizing agents and a catalyst system comprising a noble metal and/or a compound of a noble metal of the 8th subgroup of the Periodic System of Elements and a compound capable of undergoing Redox reactions under reaction conditions of the 3rd to 5th main group and/or 1st to 8th subgroup of the Periodic System of Elements.