Preparation of fatty acid esters of ascorbic acid

US4705869A · kind A · utility

Assignee

• BASF SE

Inventors

• Helmut Nickels · Mutterstadt, DE
• Alfred Hackenberger · Ludwigshafen, DE

Key dates

• Filing date: Aug 2, 1985
• Grant date: Nov 10, 1987
• Expiry date: Aug 2, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Fatty acid esters of ascorbic acid are prepared by a process in which a homogeneous mixture of PA0 (a) ascorbic acid, PA0 (c) concentrated sulfuric acid having a concentration of not less than 96% and PA0 (c) a methyl or ethyl ester of a fatty acid of 12 to 18 carbon atoms is reacted at from 20.degree. to 50.degree. C. Using the novel process, the fatty acid esters of ascorbic acid, in particular ascorbyl palmitate, which are very desirable antioxidants are obtained by a procedure which is technically simpler and hence cheaper than the conventional processes, but in equally good yields.