Relevant articles and documents
Nickel-catalysed direct C2-arylation of N-heterocyclic carbenes
Ho, Nga Kim T. Neumann, Beate Stammler, Hans-Georg Menezes Da Silva, Vitor H. Watanabe, Daniel G. Braga, Ataualpa A. C. Ghadwal, Rajendra S.
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.
N-heterocyclic carbenes: III. N-heterocyclic carbene ligands based on abietane in Suzuki-Miyaura reaction
Glushkov Valieva Maiorova Baigacheva Gorbunov
By reactions of N-alkyl- and N-arylimidazoles with methyl 12-bromoacetyldehydroabietate a series of unsymmetrically substituted chiral imidazolium bromides with the abietane fragment was synthesized. The salts obtained were suggested as new N-heterocyclic carbene ligands in the Suzuki-Miyaura reaction.
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