Method for the isomerization of oxiranes

US4734529A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Marion Berg · Rodenbach, DE
• Andreas Grund · Darmstadt, DE
• Guenter Prescher · Hanau, DE

Key dates

• Filing date: Dec 22, 1986
• Grant date: Mar 29, 1988
• Expiry date: Dec 22, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/58
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The method for the isomerization of oxiranes of the general formula: ##STR1## wherein R.sub.1 and R.sub.3 are hydrogen; R.sub.2 is alkyl or alkylene groups of 3 to 26 carbon atoms or the phenyl group which may also be substituted, and R.sub.4 is hydrogen or alkyl from 1 to 26 carbon atoms and in which the carbon atoms of the epoxy ring can also form components of a cyclic system, wherein as a catalyst there is used alkali iodide and a polyethyleneglycol with an average mol mass of 400 to 10,000 with a boiling point, preferably above the boiling point of the carbonyl compounds that are formed.