Enantiospecific Cis-Cyclopropane Synthesis Using the Chiral Iron Carbene Complexes S- and R-(5-C5H
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- 作者：Qinwei Wang ; F. Holger Fö ; rsterling ; and M. Mahmun Hossain
- 刊名：Organometallics
- 出版年：2002
- 出版时间：June 24, 2002
- 年：2002
- 卷：21
- 期：13
- 页码：2596 - 2598
- 全文大小：42K
- 年卷期：v.21,no.13(June 24, 2002)
- ISSN：1520-6041
文摘
The first enantiospecific cis-cyclopropanationreaction involving a chiral-at-carbene-ligand complexwas developed by utilizing the carbene complex S- orR-Cp(CO)2Fe=CH[
6-(o-CH3C6H4)Cr(CO)3]+ (6). Low-temperature NMR studies indicate that the ratio of synto anti isomer of the carbene is related to the enantioselectivity of cyclopropanation and lead to the design of6, which occurs exclusively in the anti conformation.
6-(o-CH3C6H4)Cr(CO)3]+ (6). Low-temperature NMR studies indicate that the ratio of synto anti isomer of the carbene is related to the enantioselectivity of cyclopropanation and lead to the design of6, which occurs exclusively in the anti conformation.