Process for producing N-carbobenzoxy-L-aspartic anhydride

Details Process for producing N-carbobenzoxy-L-aspartic anhydride Process for producing N-carbobenzoxy-L-aspartic anhydride

1983-03-29

1985-04-02

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30766

Patent

active

045089124

ABSTRACT:
A process for producing a high yield of N-carbobenzoxy-L-aspartic anhydride from N-carbobenzoxy-L-aspartic acid in a very short period using commercially acceptable reaction conditions is disclosed. The process is characterized by reacting N-carbobenzoxy-L-aspartic acid with acetic anhydride in the presence of a metal oxide, a metal hydroxide, a metal salt of acid, an organobasic compound or an acid having a dissociation constant of 5.times.10.sup.-2 or more.

REFERENCES:
patent: 4332718 (1982-06-01), Takahasi et al.
Tanaka et al., Chem. Abstracts vol. 80, (1974), 71101w.

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