Process for the preparation of cyclopropylamine

US5032687A · kind A · utility

Assignee

• Kernforschungsanlage Lulich Gesellschaft mit beschrankter Haftung · DE

Inventors

• Herbert Diehl · Leverkusen, DE
• Heinz U. Blank · Odenthal, DE
• Edwin Ritzer · Leverkusen, DE

Key dates

• Filing date: Oct 18, 1989
• Grant date: Jul 16, 1991
• Expiry date: Oct 18, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present process for the preparation of cyclopropylamine by the so-called Hofmann degradation of cyclopropanecarboxamide is characterized in that the cyclopropanecarboxamide is employed in the form of a solution. The new process can be carried out at 5.degree.-35.degree. C. The cyclopropylamine is obtained after introducing the reaction mixture into a concentrated alkali metal hydroxide solution.