Resolution of enantiomers of herbicidal 2-(4-aryloxyphenoxy) pro

Details Resolution of enantiomers of herbicidal 2-(4-aryloxyphenoxy) pro Resolution of enantiomers of herbicidal 2-(4-aryloxyphenoxy) pro

1988-07-05

1989-05-16

Lone, Werren B.

Recorders

Record receiver deforming

71109, 562401, 562470, 562471, C07B 5700

Patent

active

048311472

ABSTRACT:
Racemic mixtures of 2-(4-aryloxyphenoxy)propionic acids are resolved into their optically active enantiomers by dissolving the racemate with at least one equivalent of a cinchona alkaloid in a halogenated hydrocarbon solvent and by extracting with a polyhydroxylic solvent.

REFERENCES:
patent: 4531969 (1985-07-01), Nestler et al.
patent: 4766220 (1988-08-01), Gras
Pettersson et al, Journal of Chromatography, vol. 282, pp. 671-684, 1983.
Pettersson, Journal of Chromatography, vol. 316, pp. 553-567, 1984.

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