Nickel-catalysed direct C2-arylation of N-heterocyclic carbenes,Dalton Transactions

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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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