Process for preparation of a pesticidal phenylacetate enantiomer

Details Process for preparation of a pesticidal phenylacetate enantiomer Process for preparation of a pesticidal phenylacetate enantiomer

1981-03-16

1982-09-21

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424304, C07C12166, C07C12175

Patent

active

043506429

ABSTRACT:
A pesticidal phenylacetate Y enantiomer pair is prepared by precipitating crystals of novel phenylacetate X enantiomer pair in the presence of crystals of phenylacetate X from a solution of racemic phenylacetate and recovering the filtrate rich in the Y enantiomer pair. The phenylacetate X crystals can be redissolved, epimerized and the epimerizaion product recycled to improve the yield of phenylacetate Y enantiomer pair.

REFERENCES:
patent: 4176195 (1979-11-01), Stoutamire
patent: 4238406 (1980-12-01), Suzuki et al.

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