Aqueous process for preparing amido-carboxylic acids by reacting

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

1994-04-15

1995-02-21

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, 554154, 554161, C07C23102

Patent

active

053917804

ABSTRACT:
This invention relates to a process for preparing amido-carboxylic acids in water. The process involves four steps. Step (A) involves hydrolyzing a lactam at a temperature of 150.degree. C.-300.degree. C. to form a mixture containing an amino acid. Step (B) involves cooling the reaction mixture formed in Step (A) to a temperature of 25.degree. C.-100.degree. C. Step (C) involves reacting a carboxylic acid anhydride with the amino acid formed in Step (A) to form a reaction mixture containing an organic layer which contains an amido-carboxylic acid and an aqueous layer. Step (D) 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: 2956068 (1960-10-01), Dohr et al.
patent: 3796751 (1974-03-01), Fuhrmann et al.

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