Process for the preparation of L-aspartic acid N-thiocarboxyanhy

Details Process for the preparation of L-aspartic acid N-thiocarboxyanhy Process for the preparation of L-aspartic acid N-thiocarboxyanhy

1979-10-29

1981-03-17

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D27704

Patent

active

042568978

ABSTRACT:
An improved process for the preparation of L-aspartic acid N-thiocarboxyanhydride by the reaction of a 0.75 to 1.25 molar solution of an N-alkoxy-thiocarbonyl L-aspartic acid in a lower alkyl acetate solvent with a phosphorous trihalide. The desired product is substantially insoluble in the lower alkyl acetate solvent and is recovered in pure form without further purification or separation steps.

REFERENCES:
patent: 3846398 (1974-11-01), Hirschmann et al.
Dewey et al., J. Org. Chem. 36, 49, (1971).
Bailey, J. Chem. Soc. 1950, 3461, (1950).
Aubert et al., J. Chem. Soc. 1951, 2195, (1951).

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