Patent · US Expired

Preparation of E-oxime ethers of phenylglyoxylic esters

US5354883A · kind A · utility

11Cited by

5References

4Claims

0Family size

Assignee

BASF SE

Inventors

Heinz Isak · Haßloch, DE
Michael Keil · Freinsheim, DE
Bernd Wolf · Niederkirchen, DE
Horst Wingert · Mannheim, DE

Key dates

Filing date	Feb 5, 1993
Grant date	Oct 11, 1994
Priority date	—
Expiry date	Feb 5, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C251/48
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

E-Oxime ethers of phenylglyoxylic esters of the formula I ##STR1## X, Y=halogen, alkyl, alkoxy, CF.sub.3, C(.dbd.NOR)R (R=alkyl or alkenyl) are prepared by reacting oximes of the formula II ##STR2## with a methylating agent in an organic diluent, and E-oximes of phenylglyoxylic esters of the formula II are prepared by isomerizing the E/Z-oximes.

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