Preparation of tartronic esters

Details Preparation of tartronic esters Preparation of tartronic esters

1984-04-11

1985-03-12

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

556417, C07C 69675

Patent

active

045046735

ABSTRACT:
A process for the preparation of a tartronic ester of the formula ##STR1## in which R.sub.1 and R.sub.2 each independently is an optionally substituted alkyl or cycloalkyl radical, comprising reacting (trimethylsilyloxy)tricyanomethane in the presence of a mineral acid, with at least one alcohol of the formula R.sub.1 OH and R.sub.2 OH and hydrolyzing the product of reaction. Advantageously the alcohols are employed in at least three times the molar amount of the (trimethylsilyloxy)tricyanomethane, and the reaction and hydrolysis are carried out in immediate succession in the same reaction vessel.

REFERENCES:
patent: 2843603 (1958-07-01), Stork
patent: 3567749 (1971-03-01), Neugebauer et al.
patent: 3720679 (1973-03-01), Feldman et al.
patent: 3997593 (1976-12-01), Stadler et al.
Lidy et al., Chemical Abstracts, 78:111408, (1973).
Mukherji, "Preparation of Triethyl 2-methyl-5-isopropylpentane-1,2,5-tricarboxylate," J. Ind. Chem. Soc., vol. 40, No. 5, pp. 405-406, (1963).
Migrdichian, Organic Synthesis, vol. 1, Reinhold Publishing Corp., New York, pp. 429-430, (1957).

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