Process for the preparation of optical isomers of 2-chloropropio

Details Process for the preparation of optical isomers of 2-chloropropio Process for the preparation of optical isomers of 2-chloropropio

1990-05-30

1991-09-17

Richter, Johann

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546296, 549 66, 549478, 549479, 560226, 560228, 560229, 560230, C07D21363, C07D33332, C07D30758, C07C 6963

Patent

active

050496760

ABSTRACT:
A process for the preparation of optically active esters of 2-chloropropionic acid of the formula: ##STR1## from an optically active lactate of the formula: ##STR2## with inversion of configuration. COOR.sub.1 in formula I and formula II is a hydrolyzable group. The lactate of formula II is brought into contact with SOCl.sub.2, followed by decomposition of the chlorosulfite formed, the process being one in which at least the decomposition stage is carried out in the presence of an ether.

REFERENCES:
Buathier, et al, Chem. Abstracts, 95(1):168563w (1981).
Azzena et al, Chem. Abstracts, 112(19)178030d (1989).

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