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Nickel-catalysed direct C2-arylation of N-heterocyclic carbenes
Dalton Transactions ( IF 3.5 ) Pub Date : 2017-08-23 00:00:00 , DOI: 10.1039/c7dt03099a
Nga Kim T. Ho 1, 2, 3, 4, 5 , Beate Neumann 1, 2, 3, 4, 5 , Hans-Georg Stammler 1, 2, 3, 4, 5 , Vitor H. Menezes da Silva 6, 7, 8, 9, 10 , Daniel G. Watanabe 6, 7, 8, 9, 10 , Ataualpa A. C. Braga 6, 7, 8, 9, 10 , Rajendra S. Ghadwal 1, 2, 3, 4, 5
Affiliation  

A highly efficient nickel catalysed method for the direct C2-arylation of N-heterocyclic carbenes (NHCs) is reported. This protocol enables a facile access to C2-arylated imidazolium salts (NHC–Ar)X (X = Cl, Br, I or OTf). Experimental and theoretical studies suggest the viability of a Ni(I)/Ni(II) catalytic pathway in which the dinuclear Ni(I) species [(NHC)NiX]2 plays a key role.

中文翻译:

镍催化的N-杂环卡宾的直接C2-芳基化

报道了一种用于N-杂环卡宾(NHCs)的直接C2-芳基化的高效镍催化方法。该协议可以轻松获得C2-芳基咪唑鎓盐(NHC–Ar)X(X = Cl,Br,I或OTf)。实验和理论研究表明,Ni(I)/ Ni(II)催化途径的可行性,其中双核Ni(I)物种[(NHC)NiX] 2起关键作用。
更新日期:2017-09-20
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