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Synthesis of new chiral [2-(1-hydroxyalkyl)pyrrolidino]methylferrocenes and application to the catalytic asymmetric addition of diethylzinc to arylaldehydes
被引:5
|作者:
Xu, CL
[1
]
Wang, MC
[1
]
Hou, XH
[1
]
Liu, HM
[1
]
Wang, DH
[1
]
机构:
[1] Zhengzhou Univ, Dept Chem, Zhengzhou 450052, Peoples R China
关键词:
chiral [2-(1-hydroxyalkyl)pyrrolidino]methylferrocene;
synthesis;
asymmetric addition;
diethylzinc;
arylaldehyde;
D O I:
10.1002/cjoc.200591443
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A series of new optically active [2-(1-hydroxyalkyl)pyrrolidino]methylferrocenes were conveniently prepared from commercially available L-proline and ferrocenecarboxylic acid. The crystal structure of key intermediate was obtained. They were then applied to catalyze enantioselective addition of diethylzinc to arylaldehydes with enantioselectivity up to 99%. The effects of the ligand structures on the enantioselectivity were also studied.
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页码:1443 / 1448
页数:6
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