eta(3)-(1,2,3)-cyclohexenyl- and eta(3)-(1,2,3)-cycloheptenylpalladium complexes, respectively, in which C-C bond formation between the allene and the 1,3-diene has occurred. Analysis of the (pi-allyl)palladium complexes by NMR spectroscopy, using reporter ligands, shows that the C-C bond formation has occurred by a trans carbopalladation involving nucleophilic attack by the middle carbon atom of the
丙二烯取代的环己-和环庚-1,3-二烯与[PdCl(2)(PhCN)(2)]的反应得到eta(3)-(1,2,3)-
环己烯基-和eta(3)- (1,2,3)-
环庚烯基
钯络合物,其中在
丙二烯和1,3-二烯之间已形成CC键。使用报道分子
配体通过NMR光谱分析(pi-烯丙基)
钯配合物,表明CC键的形成是通过反式碳
钯反应进行的,该反应涉及
丙二烯中间碳原子在(pi-diene)
钯( II)复杂。(对-烯丙基)
钯配合物的立体
化学通过苯醌诱导的立体选择性转化为
乙酸烯丙酯得到证实。