Process for the preparation of dienes

US4078008A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Reinhard Lantzsch · Leverkusen, DE
• Dieter Arlt · Cologne, DE
• Ernst Kysela · Bensberg, DE

Key dates

• Filing date: Jul 22, 1976
• Grant date: Mar 7, 1978
• Expiry date: Jul 22, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/25
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of a diene of the formula ##STR1## in which X and Y are independently fluorine, chlorine or bromine Which comprises contacting a 1,1,1-trihalo-4-methyl-4-hydroxypentane of the formula ##STR2## in which X and Y have the previously assigned significance and Z is a chorine or bromine atom With a dehydrohalogenating agent and a dehydration agent.