Process for the preparation of epoxydes of organic enolesters

Details Process for the preparation of epoxydes of organic enolesters Process for the preparation of epoxydes of organic enolesters

C - Chemistry, Metallurgy

07

D

260/369.5

C07D 303/00 (2006.01) C07D 303/48 (2006.01)

Patent

CA 1051911

ABSTRACT OF THE DISCLOSURE The invention relates to a process for the preparation of epoxides of organic enolesters having the general formula: Image wherein R is an allyl radical, which process comprises reacting salts of organic acids of alkaline or alkaline-earth materials of formula Me(OOCR)n wherein Me is the alkaline or alkaline- earth metal, n represents the valence and R has the nbove meaning, with compounds of the general formula: Image wherein X represents an halogen, the reaction taking place in the presence of a solvent selected among alcohols, ketones, dimethylformamide and alkyl acetates, at a temperature ranging between -30 and +70°C and at such a pressure so as to maintain the system in a liquid phase. The compounds according to the present invention are useful intermediates for organic syntheses, in the preparation, for example of alpha-hydroxy, -acyloxy, -amino carbonyl, beta-hydroxy-amino-acids.

227119

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