π-单取代环戊二烯基镍（Ⅱ）的膦和胂配合物的合成及其催化性能

π-单取代环戊二烯基镍（Ⅱ）的膦和胂配合物的合成及其催化性能 SYNTHESES AND CATALYSIS OF TRIPHENYL-PHOSPHINE AND -ARSINE COMPLEXES OF MONO-SUBSTITUTED CYCLOPENTADIENYL NICKEL 陈连喜 Chen Lianxi 1 2 3 first-author 陈新兰 Chen Xinlan 1 2 3 池杰 Chi Jie 1 2 3 张伦 Zhang Lun 1 2 3 武汉大学化学系 武汉大学化学系 Department of Chemistry,Wuhan University Department of Chemistry,Wuhan University 武汉大学化学系,武汉 武汉大学化学系,武汉 ,430072 ,430072 合成了如下两类单取代环戊二烯基镍配合物:NiRC 5 H 4 LBr（L=PPh 3 ,R=Me,Et,n-Bu;L=AsPh 3 ,R=Me,Et）和[NLRC 6 H 4 （PPh 3 ） 2 ]Br（R=Me,Et,n-Bu）。观测和讨论了它们的IE、UV-Vis和 1 H NMR等波谱性质,研究了它们对氯化苄与苯基溴化镁交叉偶联反应的催化活性,提出了可能的催化历程,并与含二茂铁基配体的镍（Ⅱ）配合物催化上述反应的活性作了对比。 We synthesised two kinds of triphenyl-phosphine and -arsine complexes of mono-substituted cyclopentadien yl nickel Their formulae are as follows: NiRC 5 H 4 LBr（L=PPhs, R=Me, Et, and n-Bu;L=AsPh 3 ,R=Me,and Et） and [NiRC 5 H 4 （PPh 3 ） 2 ]Br（R=Me,Et,and n-Bu）. They were characterized by IR,UV-Vis,and 1 H NMR spectra. The catalytic activities of these nickel complexes for the across coupling reaction of benzyl chloride with phenylmagnisium bromide were examined and are discussed. The results were compared with the catalytic activities for the nickel complexes of ferrocenyl ligands. In addition, the possible catalytic cycle was also proposed. 有机镍化合物 单取代环戊二烯基 膦和肿 催化 交叉偶联反应 organonickel compounds mono-substituted cyclopentadienyl phosphine and arsinc catalysis across coupling reaction O627.8;O643.32 国家自然科学基金(61672102) 1993-03-01 2021-04-01 3