Process for the preparation of D-(-)-phenylglycine chloride hydr

Details Process for the preparation of D-(-)-phenylglycine chloride hydr Process for the preparation of D-(-)-phenylglycine chloride hydr

1994-02-28

1996-04-02

Killos, Paul J.

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

Organic compounds

Carboxylic halides

C07C 5158

Patent

active

055042503

ABSTRACT:
The invention relates to a process for the preparation of D-(-)-phenylglycine chloride hydrochloride by chlorinating D-(-)-phenylglycine hydrochloride, which as such is prepared in situ from D-(-)-phenylglycine and hydrochloric acid gas, in a solvent. According to the invention chlorination of the hydrochloride is carried out in a non-chlorinated solvent or a mixture of non-chlorinated solvents in the presence of a reaction promoting medium.
Chlorination is carried out through the addition of PCl.sub.5, but preferably the PCl.sub.5 is prepared in situ from PCl.sub.3 and Cl.sub.2 gas.

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