Process for the production of 4,4,8,8,10-pentamethyl-10-cyano-bicyclo[4.4.0]-dec-1,6-en-2-one

US4788318A · kind A · utility

Assignee

• Huls Aktiengesellschaft · DE

Inventors

• Wilfried Buschken · Haltern am See, DE
• Klaus Rindtorff · Holzgerlingen, DE

Key dates

• Filing date: Aug 25, 1987
• Grant date: Nov 29, 1988
• Expiry date: Aug 25, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C49/637
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the production of the bicyclic compound 4,4,8,8,10-pentamethyl-10-cyano-bicyclo[4.4.0]-dec-1,6-en-2-one which comprises the steps of (a) reacting a ketone fraction comprising ##STR1## or mixtures thereof, (b) by adding HCN to the ketone fraction the presence of a base, at a temperature of 50.degree.-200.degree. C. to obtain an addition product comprising the bicyclic compound, and PA0 (c) isolating the addition product.