Process for making and isolating (R)-2-hydroxy-4-phenylbutyric a

Details Process for making and isolating (R)-2-hydroxy-4-phenylbutyric a Process for making and isolating (R)-2-hydroxy-4-phenylbutyric a

1987-09-09

1989-06-06

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

562470, C07C 6976

Patent

active

048373540

ABSTRACT:
Disclosed herein is a novel compound, (L)-menthyl 2-oxo-4-phenylbutyrate, and an improved process for making and isolating a substantially pure compound of the structural formula: ##STR1## wherein Y is hydrogen or (L)-menthyl the improvement which comprises: (a) stereoselectively reducing (L)-menthyl 2-oxo-4-phenylbutyrate by contacting said compound with S-B-(3-pinanyl)-9 horabicyclo[3,3,1]nonone,

REFERENCES:
patent: 4374829 (1983-02-01), Harris et al.
patent: 4415496 (1983-11-01), Harris et al.
Ohno, A. et al., Bull. Chem. Soc. Jpn, 59(9) 2905-6, 1986.
Fusco, R., J. O. Chem., 49(23) 4374-8, 1984.

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