2-Oxo-1-Pyrrolidine Derivatives, Processes For Preparing Them And Their Uses
申请人:Ates Célal
公开号:US20090318708A1
公开(公告)日:2009-12-24
The present invention relates to optically enriched or substantially optically pure 4-substituted-pyrrolidin-2-ones of formula (III), and their uses for the synthesis of 2-oxo-pyrrolidin-1-yl derivatives.
The present invention relates to new co-crystals of pyrrolidinones having the formula (I) wherein R
1
is a C
1
-C
6
alkyl group. R
2
is a C
1
-C
6
alkyl group which is optionally substituted by 1 to 3 halogens or R
2
is a C
2
-C
6
alkenyl group.