期刊
ORGANOMETALLICS
卷 36, 期 24, 页码 4753-4758出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.7b00628
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资金
- SERB (DST) of India [SR/S1/IC-25/2012]
- UGC, New Delhi, India
- DST
- IISER-Kolkata
Herein we report the hydroheteroarylation of vinylarenes with benzoxazole in the presence of a free abnormal N-heterocyclic carbene and Ni(COD)(2), resulting in 1,1-diarylethane products exclusively. In an attempt to understand the mechanism of this catalytic reaction, two abnormal-NHC (aNHC)-coordinated Ni(II) cyclooctenyl complexes were isolated and their solid-state structures were determined by X-ray crystallographic studies. These Ni(II) cyclooctenyl complexes act as active catalyst precursors to generate in situ aNHC-Ni(0) species, which undergo oxidative addition with heteroarene to form Ni(II) hydride intermediates.
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