Patent · US Expired

Process for the preparation of oxiranes

US4886892A · kind A · utility

5Cited by

2References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Rudolf Zerbes · Wuppertal, DE
Siegfried W. Linke · Wuppertal, DE
Karl H. Mohrmann · Bensberg, DE

Key dates

Filing date	Jan 27, 1987
Grant date	Dec 12, 1989
Priority date	—
Expiry date	Jan 27, 2007

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D303/08
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the preparation of oxiranes is disclosed in which a ketone of the formula ##STR1## wherein Y represents chlorine or phenyl, X represents oxygen or CH.sub.2 and Z represents hydrogen or halogen is reacted with trimethylsulphonium methyl sulphate formed by treating dimethyl sulphide with dimethyl sulphate. The process is carried out in the presence of potassium hydroxide or sodium hydroxide powder in an inert organic diluent at 0.degree. to 60.degree. C. The products are useful as intermediates for the formation of plant growth regulants and fungicides.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.