Manufacture of symmetrical carotenoids

US4105855A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernhard Schulz · Schwetzingen, DE
• Joachim Paust · Schifferstadt, DE
• Joachim Schneider · Bad Dürkheim, DE

Key dates

• Filing date: Jan 26, 1976
• Grant date: Aug 8, 1978
• Expiry date: Jan 26, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Symmetrical carotenoids are prepared from the half-molecules by dimerizing the phosphonium salts of the half-molecules with peroxides, peroxo compounds or peroxy compounds in an alkaline medium.