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Chiral epoxides by desymmetrizing deprotonation of meso-epoxides
被引:0
|作者:
Hodgson, DM
[1
]
Gras, E
[1
]
机构:
[1] Univ Oxford, Dyson Perrins Lab, Oxford OX1 3QY, England
关键词:
D O I:
10.1002/1521-3773(20020703)41:13<2376::AID-ANIE2376>3.0.CO;2-Q
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Simple meso-epoxides can be asymmetrically functionalized: Ligand-assisted direct hydrogen-lithium exchange allows the generation of destabilized oxiranyl lithium species and their subsequent trapping by a wide array of electrophiles (see scheme; E = group formed by addition of electrophile). When carried out in the presence of (-)-sparteine as ligand, this reaction provides a new enantioselective route to epoxides.
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页码:2376 / 2378
页数:3
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