Process for preparing 2,3-dimethyl-butene-2

US4288643A · kind A · utility

Assignee

• Ruhrchemie Aktiengesellschaft · DE

Inventors

• Jurgen Weber · Oberhausen, DE
• Wolfgang Bernhagen · Mülheim, DE
• Helmut Springer · Dinslaken, DE

Key dates

• Filing date: May 5, 1980
• Grant date: Sep 8, 1981
• Expiry date: May 5, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2527/054
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of 2,3-dimethylbutene-2 is disclosed, which comprises the steps of converting isovaleraldehyde to isopropylacrolein, hydrogenating .alpha.-isopropylacrolein to form 2,3-dimethylbutanol, dehydrating 2,3-dimethylbutanol to form an olefin mixture comprising 2,3-dimethylbutene-1 and 2,3-dimethylbutene-2, and isomerizing the 2,3-dimethylbutene-1 contained in the mixture into 2,3-dimethylbutene-2. The present process is technically simple and inexpensive to utilize, and results in high yields of the desired product.