Aqueous process for preparing amido-carboxylic acids

Details Aqueous process for preparing amido-carboxylic acids Aqueous process for preparing amido-carboxylic acids

1994-04-15

1995-02-28

Dees, Jose G.

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

Organic compounds

Fatty compounds having an acid moiety which contains the...

554 63, 554 68, 554154, 554161, C07C23102

Patent

active

053939018

ABSTRACT:
This invention relates to a process for preparing amido-carboxylic acids in water wherein hydrolysis and amidation reactions are conducted simultaneously in a single vessel. The process involves three steps. The first step involves heating at a temperature of 150.degree. C.-300.degree. C. for 2 to 10 hours, a mixture containing water, a nitrogen containing compound selected from the group consisting of a lactam and an amino acid, and a carboxylic acid or ester. The second step involves cooling the reaction mixture to obtain a two phase system containing an aqueous layer and an organic layer. The third step involves separating the amido-carboxylic acid containing organic layer from the aqueous layer. The presence of water aids in product isolation by phase separation and recycle of the reactants.
Amido-carboxylic acids are used to make bleach activators for detergents.

REFERENCES:
patent: 2453234 (1948-11-01), Keck
patent: 2844611 (1958-07-01), Freudenberg
patent: 2956068 (1969-10-01), Dohr et al.

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