期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 23, 页码 6918-6921出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201502548
关键词
chirality; ligand effects; metallocenes; rhodium; silicon
资金
- National Key Basic Research Program of China [2012CB224802]
- NSF of China [21371107]
- Tsinghua-Peking Joint Centers for Life Sciences
- China Postdoctoral Science Foundation [2013M540083]
Reported herein is the rhodium-catalyzed enantioselective CH bond silylation of the cyclopentadiene rings in Fe and Ru metallocenes. Thus, in the presence of (S)-TMS-Segphos, the reactions took place under very mild conditions to afford metallocene-fused siloles in good to excellent yields and with eevalues of up to 97%. During this study it was observed that the steric hindrance of chiral ligands had a profound influence on the reactivity and enantioselectivity of the reaction, and might hold the key to accomplishing conventionally challenging asymmetric CH silylations.
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