Journal of organometallic chemistry

Nickel (0)/N-heterocyclic carbene complexes catalysed arylation of aromatic diamines

S Kuhl, Y Fort, R Schneider

Index: Kuhl, Sebastien; Fort, Yves; Schneider, Raphael Journal of Organometallic Chemistry, 2005 , vol. 690, # 24-25 p. 6169 - 6177

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Citation Number: 49

Abstract

Nickel complexes of N-heterocyclic carbenes were examined for effecting C–N coupling reactions between aromatic diamines and aryl chlorides of varying electron density. The Ni (0)· 2IPr (IPr= N, N′-bis (2, 6-diisopropylphenyl) imidazol-2-ylidene) complex associated to t-BuONa allowed N, N′-diarylation at 100° C in 1, 4-dioxane with excellent yields. Selective monoarylation of diamines could be performed in THF at 65° C.