Process for the preparation of pivaloylacetic acid esters

Details Process for the preparation of pivaloylacetic acid esters Process for the preparation of pivaloylacetic acid esters

1984-12-26

1987-04-28

Garner, Vivian

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

Organic compounds

Carboxylic acid esters

564136, C07C 67333, C07C 69716

Patent

active

046616217

ABSTRACT:
An improved process for the preparation of pivaloylacetic acid esters by decarbonylation of pivaloylpyruvic acid esters at elevated temperatures is described. The process is carried out in the presence of 0.01 to 5 percent by weight of a metal of sub-groups one to eight of the periodic system, which metal is in metallic and/or oxidic form. Initially, 30 percent of the pivaloylpyruvic acid ester to be converted is heated in the presence of the metal, and after conversion of the same there is added additional pivaloylpyruvic acid ester according to the rate at which the pivaloylpyruvic acid ester is converted.

REFERENCES:
patent: 2527306 (1950-10-01), Halverstadt
House, Modern Synthetic Reactions, 2nd ed., 1972, pp. 747-750.
Snyder et al., Organic Synthesis, 1943, col. vol. 2, pp. 531-534.

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