期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 9, 页码 2408-2412出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201612559
关键词
annulations; cyclopentadienyl ligands; reaction mechanisms; rhodium catalysis
资金
- Institute for Basic Science [IBS-R010-D1]
A change in reaction pathway was achieved for the first time by tuning the cyclopentadienyl (Cp) ligand used for the rhodium-catalyzed cyclization of benzamides with conjugated enynones. Depending on the Cp ligand, the reaction pathway switched between [4+2] and [4+1] annulation. Electronic effects turned out to be crucial for the product distribution. The dichotomy was attributed to the alteration of the Lewis acidity of the resultant Cp-bound rhodium species.
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