期刊
ORGANOMETALLICS
卷 31, 期 20, 页码 7040-7043出版社
AMER CHEMICAL SOC
DOI: 10.1021/om300804a
关键词
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资金
- National Basic Research Program of China (973 Program) [2011CB808705]
- National Natural Science Foundation of China [21002114, 20872168, 2112106210]
Intramolecular C(sp(3))-H bond activation reactions mediated by low-valent cobalt, both Co(I) and Co(0), have been observed in the reactions of the three-coordinate cobalt complex [Co(IMes)(2)Cl] (IMes = 1,3-dimesitylimidazol-2-ylidene) with alkylation reagents and sodium amalgam. The reactions with alkylation reagents gave [Co(IMes)(IMes')(N-2)], featuring a metalated IMes' anion, whereas the one-electron-reduction reaction afforded [Co(IMes')(2)]. The Co(II) complex can react with CO, isocyanide, and a diazo compound to furnish interesting cobalt complexes bearing functionalized N-heterocyclic carbene ligands. The establishment of these conversions demonstrates the capability of low-valent cobalt with coordination unsaturation to mediate C(sp(3))-H bond activation and functionalization.
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