Preparation of 2-substituted but-2-ene-1, 4-dial-4-acetals and novel hemiacetals of glyoxal monoacetals

US5565583A · kind A · utility

Assignee

• BASF SE

Inventors

• J urgen Frank · Ludwigshafen, DE
• Johann-Peter Melder · Schifferstadt, DE
• Franz Merger · Bischofswerda, DE
• Tom Witzel · Ludwigshafen, DE

Key dates

• Filing date: Jun 5, 1995
• Grant date: Oct 15, 1996
• Expiry date: Jun 5, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D319/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Hemiacetals of glyoxal monoacetals are useful as intermediates to prepare 2-substituted but-2-en-1,4-dial-4-acetals of the general formula I; ##STR1##