期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 22, 页码 8141-8144出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja4030462
关键词
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资金
- Office of Basic Energy Sciences of the U.S. Department of Energy [DE-FG02-13ER16369]
- DFG [DFG KL 1194/5-1]
Mechanistic proposals for nickel-catalyzed coupling reactions often invoke five-coordinate alkyl- or aryl-bound Ni(II) and/or high-valent nickel(III) species, but because of their reactive nature, they have been difficult to study and fingerprint. In this work, we invoked the stabilizing properties of fluoroalkyl ligands to access such nickel species bearing ligands that are commonplace in organic coupling reactions. We show that five-coordinate Ni(II) complexes containing nickel-carbon bonds can readily be prepared given the appropriate precursor, and we also present evidence for the formation of Ni(III) species upon chemical and electrochemical oxidation of the five-coordinate complexes.
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