Ni(II)-(σ-Aryl) complex:: A facile, efficient catalyst for nickel-catalyzed carbon-nitrogen coupling reactions
Ni(II)-(σ-Aryl) complex:: A facile, efficient catalyst for nickel-catalyzed carbon-nitrogen coupling reactions
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DOI：
10.1021/jo0709448
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发表时间：
2007-08-03
影响因子：
3.6
通讯作者：
Yang, Lian-Ming
中科院分区：
文献类型：
--
作者：
Chen, Chen;Yang, Lian-Ming
[图形]反式-卤代芳基双（三苯基膦）镍（II）是一种空气和水分稳定的Ni（II）-（σ-芳基）络合物，在C-N偶联反应中作为催化剂前体进行了研究。发现这种类型的Ni（II）预催化剂，与N-杂环卡宾配体相关联，容易在原位产生催化活性Ni（0）物质而无需外部还原剂的帮助，并且允许芳基氯与仲环胺和苯胺在温和条件下的有效胺化。
[GRAPHICS]trans-Haloarylbis(triphenylphosphine)nickel(II), a type of air- and moisture-stable Ni(II)-(sigma-aryl) complex, was examined as catalyst precursor in the C-N coupling reaction. This type of Ni(II) pre-catalyst, associated with N-heterocyclic carbene ligands, is found to easily produce the catalytically active Ni(0) species in situ without the aid of external reductants and allows for the efficient amination of aryl chlorides with secondary cyclic amines and anilines under mild conditions.