Preparation of enantiomerically pure lactams

Details Preparation of enantiomerically pure lactams Preparation of enantiomerically pure lactams

1996-04-30

1997-09-02

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540540, 540362, 546243, 548543, C07D20508, C07D20102, C07D21188, C07D20726

Patent

active

056633297

ABSTRACT:
A process for preparing enantiomerically pure lactams of the formula I ##STR1## where R.sup.1 and R.sup.2 are each, independently of one another, H, unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl, unsubstituted or substituted C.sub.2 -C.sub.4 -alkenyl, unsubstituted or substituted aryl, (CH.sub.2).sub.n --COOH with n=0, 1, 2, 3, and X is 1, 2, 3, 4, 5, from a racemate of the formula I by. allowing a biocatalyst which selectively converts one enantiomer from I to act on the racemic mixture of I, and isolating the unconverted enantiomer from the resulting mixture of products.

REFERENCES:
patent: 3770585 (1973-11-01), Fukumura
patent: 5284769 (1994-02-01), Evans et al.

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