Process for preparing N-carboxylic anhydrides of amino acids

Details Process for preparing N-carboxylic anhydrides of amino acids Process for preparing N-carboxylic anhydrides of amino acids

1973-11-12

1976-02-03

Rush, Raymond V.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D26344

Patent

active

039364690

ABSTRACT:
This invention relates to an improved process for preparing N-carboxylic anhydrides of amino acids, and N-carboxylic anhydrides of derivatives of amino acids by reacting an amino acid, a derivative of amino acid or a salt thereof with trichloromethylchloroformate in an organic solvent, preferably a mixture of an ether or ester with one or more other organic solvents and adding to the reaction mixture carbon, basic aluminum chloride or aluminum oxide just before or immediately after completion of the initial reaction.

REFERENCES:
patent: 2406186 (1946-08-01), Baldwin et al.
patent: 3822281 (1974-07-01), Fujimoto et al.

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