Process for preparing a glycine

Details Process for preparing a glycine Process for preparing a glycine

C - Chemistry, Metallurgy

07

C

260/515.9

C07C 99/00 (1980.01)

Patent

CA 1051456

ABSTRACT OF THE DISCLOSURE Optically pure D-(-)- and L-(+)-2-(substituted-phenyl)- glycine derivatives, intermediates in the preparation of penicillin and cephalosporin derivatives, are prepared by chemical resolution of an ester of the corresponding racemic 2-(substituted-phenyl)glycine derivative, employing L-(-)- or D-(+)-dibenzoyltartaric acid or derivatives thereof as resolving agent, and conversion to the free acid of the corresponding D-(-)- and L-(+)-2-(substituted-phenyl) glycine ester so obtained. The invention comprises deesterifying an optically active R 2-(R1O-X1-X2-phenyl)-glycinate or an acid- addition salt thereof.

272346

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