1,1-dialkoxy-2-methyl-4,4-diacyloxy-2-butenes

US4843171A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernhard Schulz · Schwetzingen, DE
• Rolf Fischer · Heidelberg, DE

Key dates

• Filing date: Jul 1, 1987
• Grant date: Jun 27, 1989
• Expiry date: Jul 1, 2007

Classification

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

Abstract

1,1-Dialkoxy-2-methyl-4,4-diacyloxy-2-butenes having the general structure: ##STR1## in which R.sub.1 represents alkyl substituents having from 1 to 5 carbon atoms, or both R.sub.1 substituents together represent a single ethylene or propylene substituent, or a single C.sub.1 -C.sub.2 alkyl substituent, and R.sub.2 represents alkyl substituents having from 1 to 5 carbon atoms, or cycloalkyl substituent having from 5 to 7 carbon atoms, or aromatic substituents (preferably phenyl substituents). These new compounds are useful as building blocks in the synthesis of terpenes and carotenoids.