Process for preparing N-phenyl-N-methoxyacetyl-DL-alanine methyl

Details Process for preparing N-phenyl-N-methoxyacetyl-DL-alanine methyl Process for preparing N-phenyl-N-methoxyacetyl-DL-alanine methyl

1994-09-13

1997-06-17

Conrad, Joseph

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

Organic compounds

Carboxylic acid esters

C07C26904

Patent

active

056399057

ABSTRACT:
Process for the preparation of N-phenyl-N-methoxyacetyl-DL-alanine methyl ester derivatives of the formula (I). ##STR1## wherein R is a C.sub.1-4 alkyl residue; and n is a cardinal number between from 1 to 3,
which comprises reacting an N-methoxyacetyl derivative of the formula (II). ##STR2## wherein R and n are as defined above, with a stoichiometric amount of an alkaline metal alkoxide, at a temperature between 80.degree. C. and 150.degree. C., until completion of the removal of the alkanol present in the system, then reacting the thus obtained alkaline metal salt of the compound of formula (II) directly or after isolation with a methyl DL-x-halopropionate.

REFERENCES:
patent: 3048626 (1962-08-01), Wallingford
patent: 3780090 (1973-12-01), Akiba et al.

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