Process for producing a rose oxide

US5892059A · kind A · utility

Assignee

• DRAGOCO Gerberding & Co. AG · DE

Inventors

• Wilhelm Pickenhagen · Rinteln, DE
• Dietmar Schatkowski · Stadtoldendorf, DE

Key dates

• Filing date: Nov 7, 1997
• Grant date: Apr 6, 1999
• Expiry date: Nov 7, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D309/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An improved process for production of an isomer mixture of Z- and E-2-2-Methyl-prop-1-en-1-yl-!-4-methyl-tetrahydropyran, more commonly known under the name cis- and trans-rose oxide, which as a rule contains at least 80% of the natural Z-isomers (cis-rose oxide) which are valuable in the perfume industry.