Process for the preparation of D(-).alpha.phenylglycine

Details Process for the preparation of D(-).alpha.phenylglycine Process for the preparation of D(-).alpha.phenylglycine

1978-10-16

1980-07-29

Morgenstern, Norman

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

Organic compounds

Carboxylic acids and salts thereof

562444, C07B 2000

Patent

active

042152232

ABSTRACT:
The invention provides a process for the preparation of D(-).alpha.phenylglycine by resolution of DL.alpha.phenylglycine by means of D(+)camphorsulfonic acid. The present process enables the preparation of D(-).alpha.phenylglycine at a minimum loss of the very expensive starting materials, such as DL.alpha.phenylglycine and D(+)camphorsulfonic acid. The salts produced in this process are precipitated from the resolution filtrate and the filtrate may be discarded as effluent water without any danger to the environment.

REFERENCES:
patent: 2561284 (1951-07-01), Long
patent: 3221046 (1965-11-01), Johnson et al.
patent: 3448144 (1969-06-01), Okano et al.
patent: 3828049 (1974-08-01), Karady et al.
patent: 4016205 (1977-04-01), Kariyone et al.
patent: 4111980 (1978-09-01), Boesten

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