Process for the preparation of aminomalonic acid ester salts

Details Process for the preparation of aminomalonic acid ester salts Process for the preparation of aminomalonic acid ester salts

1997-06-04

1998-12-08

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

560 38, 560125, 560145, C07C22900

Patent

active

058471979

ABSTRACT:
The invention relates to a process for the preparation of aminomalonic acid esters and optionally their salts by the catalytic hydrogenation of a substituted malonic acid ester in an inert solvent, and optionally by the addition of an acid to the hydrogenation mixture. The process comprises carrying out the hydrogenation in the presence of a solid dehydrating agent and a solvent or solvent mixture in which the aminomalonic acid ester salt is substantially insoluble.

REFERENCES:
patent: 2521809 (1950-09-01), Tishler
patent: 3941823 (1976-03-01), Hashimoto

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