Preparation of chiral pyrrolidinone derivatives

Details Preparation of chiral pyrrolidinone derivatives Preparation of chiral pyrrolidinone derivatives

1996-11-21

1998-01-20

Dees, Jose G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20720, C07D20750

Patent

active

057102830

ABSTRACT:
A process for preparing a compound of formula IIa or IIb: ##STR1## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen or C.sub.1 -C.sub.4 alkyl; and
A is an optionally substituted aromatic or heteroaromatic ring system; the process comprising the steps of:

REFERENCES:
Funaki, I. et al., "Synthesis of 3-Aminopyrrolidin-2-ones by an Intramolecular reaction of Aziridinecarboxyamides", Tetrahedron (1996), 52 (29) 9909-9924.
Deok-Chan et al., "Stereoselectivity in the Condensation Reactions between Malate Enolate and Imines to 2-Pyrrolidinone Derivatives", Tetrahedron Letters (1995), 36(46), 8445-8, 13 Nov. 1995.

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