作者:Chun-Chih Wang、Pao-Shun Lin、Chien-Hong Cheng
DOI:10.1016/j.tetlet.2004.04.085
日期:2004.8
PPh3 and zinc metal conjugated alkenes (CH2CHCOOR, CH2CHCN, CH2CHSO2Ph and CH2CHCONEt2) undergo reductive tail-to-tail dimerization to yield the corresponding saturated linear products. Under similar reaction conditions, vinylarenes (ArCHCH2) give stereoselective head-to-tail dimerization products, trans-1,3-diarylbut-1-ene, in good to excellent yields.
在CoX 2(PPh 3)2/3 PPh 3和锌金属共轭烯烃(CH 2 CHCOOR,CH 2 CHCN ,CH 2 CHSO 2 Ph和CH 2 CHCONEt 2)存在下,进行还原性的尾到尾二聚反应,得到相应的饱和线性产物。在相似的反应条件下,乙烯基芳烃(ArCHCH 2)可以产生立体选择性的头对尾二聚产物,即反式-1,3-二芳基丁-1-烯,产率高至优异。