PROCESS FOR THE PREPARATION OF 2-OXO-1-PYRROLIDINE DERIVATIVES
申请人:Surtees John
公开号:US20080009638A1
公开(公告)日:2008-01-10
The present invention relates to alternative processes for the preparation of 2-oxo-1-pyrrolidine derivatives of formula (I)
Particularly, the present invention relates to alternative processes for the synthesis of levetiracetam, brivaracetam and seletracetam.
Oxopyrrolidine compounds, preparation of said compounds and their use in the manufacturing of levetiracetam and analogues
申请人:Ates Celal
公开号:US20070142647A1
公开(公告)日:2007-06-21
The present invention relates to an improved process for the preparation of (S)-(-)-α-ethyl-2-oxo-1-pyrrolidine acetamide and analogues thereof. The invention also relates to compounds of the general formula (6)
wherein R
1
is methyl or ethyl; and R
2
is C
2
-C
4
alkyl, C
2
-C
4
alkenyl or C
2
-C
4
alkynyl, optionally substituted by one or more halogen, and their preparation processes.