Process for the manufacture of optically active 3-substituted lactams by asymmetric hydrogenation of 3-alkylidenelactams
申请人:——
公开号:US20040010139A1
公开(公告)日:2004-01-15
The present invention relates generally to processes for the efficient production optically active 3-substituted lactams of formula (I)
1
process, comprising:
contacting a compound of formula (II):
2
with hydrogen under a suitable pressure in the presence of an iridium complex of the formula (R
2
)IrL
+
X
−
wherein L is a chelating diene, X is a non coordinating anion, and
R
2
is selected from
3
本发明通常涉及一种高效生产光学活性的3-取代内酰胺的方法,其中包括:将式(II)的化合物与氢在适当压力下在(R2)IrL+X−的铱配合物存在下接触,其中L是螯合二烯,X是非配位阴离子,R2是选择自3。