Process for the preparation of tertiary olefins

US4751343A · kind A · utility

Assignee

• EC Erdolchemie GmbH · DE

Inventors

• Horst Reinhardt · Bergheim, DE
• Bernhard Schleppinghoff · Dormagen, DE

Key dates

• Filing date: Mar 10, 1987
• Grant date: Jun 14, 1988
• Expiry date: Mar 10, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2531/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Tertiary olefins are obtained in pure form by cleavage of the pertinent tert.alkyl ethers with simultaneous formation of the pertinent alcohols on strongly acidic cation exchangers in the H.sup.+ form. This cleavage is carried out at elevated temperature and atmospheric to superatmospheric pressure. The process is carried out in such a fashion that the ether to be cleaved is employed as a mixture with water. The water may be employed in an amount from 2-50% by weight, relative to the amount of the ether to be cleaved. Suitable ethers to be cleaved are those based on tertiary C.sub.4 -C.sub.7 -olefins and primary C.sub.1 -C.sub.4 -alkanols.