Nickel(0)/N-heterocyclic carbene complexes catalysed arylation of aromatic diamines
作者:Sébastien Kuhl、Yves Fort、Raphaël Schneider
DOI:10.1016/j.jorganchem.2005.08.035
日期:2005.12
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
研究了N-杂环卡宾的镍配合物对电子密度不同的芳族二胺和芳基氯化物之间的C-N偶联反应的影响。与t - BuONa缔合的Ni(0)·2IPr(IPr = N,N'-双(2,6-二异丙基苯基)咪唑-2-亚基)络合物可在100°C在1,4中使N,N'-二芳基化-二恶烷,收率高。二胺的选择性单芳基化反应可以在THF中于65°C进行。