Preparation of E-oxime ethers of phenylglyoxylic esters

Details Preparation of E-oxime ethers of phenylglyoxylic esters Preparation of E-oxime ethers of phenylglyoxylic esters

1993-02-05

1994-10-11

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C22900

Patent

active

053548833

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.

REFERENCES:
patent: 4829085 (1989-05-01), Wenderoth et al.
patent: 4999042 (1991-03-01), Anthony et al.
patent: 5112862 (1992-05-01), Wenderoth et al.
patent: 5116866 (1992-05-01), Wenderoth et al.
patent: 5221762 (1993-06-01), Wingert et al.
CA108(71): 186546j, Fernandez et al, "The Role of Acids in the Beckman Rearrangement of (-)-1R, trans) --p-- Menthan -3-One(E)-Oxime", J. Chem. Res. Symp., (10), 340-1. 1987. Abstract only.

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