Patent ID: 8802872
Filing Date: 2014-08-12
Classification: C07D

Abstract:
1. A process for the preparation of a glycidyl ester of a branched monocarboxylic acid comprising reacting an aliphatic monocarboxylic acid of the formula R 1 R 2 R 3 CCOOH, wherein R 1 , R 2 , and R 3 each independently represent an alkyl radical of normal or branched structure containing from 1 to 20 carbon atoms and an epoxyalkyl halide containing from 3 to 13 carbon atoms in the presence of a catalyst, wherein epoxyalkyl halide is reacted with the aliphatic monocarboxylic acid in a molar ratio of epoxyalkyl halide to aliphatic monocarboxylic acid of greater than 1 to 1.5 in a coupling reaction to form an intermediate reaction product comprising a halohydrin, the epoxyalkyl halide is added to the aliphatic monocarboxylic acid with cooling of the reactants or the reaction mixture to keep the temperature of the reaction mixture from 55° C. to below 80° C., such that the epoxyalkyl halide and the aliphatic monocarboxylic acid are reacted at a temperature from 55° C. to 80° C. for a time sufficient to reduce the amount of aliphatic monocarboxylic acid from 0.1 wt % to 2 wt % calculated on the initial amount of aliphatic monocarboxylic acid, retaining unreacted epoxyalkyl halide in the reaction product by the absence of distillation; and then subjecting the reaction product to the ring closure reaction, wherein the catalyst is selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, alkaline earth hydroxides, alkali metal, alkaline earth metal alcoholates, ammonium salts, and phosphonium salts.