Heck reaction of aryl halides with linear or cyclic alkenes catalysed by a tetraphosphine/palladium catalyst
作者:Florian Berthiol、Henri Doucet、Maurice Santelli
DOI:10.1016/s0040-4039(02)02788-0
日期:2003.2
4-Tetrakis(diphenylphosphinomethyl)cyclopentane/[PdCl(C3H5)]2 system catalyses efficiently the Heck reaction of aryl halides with linear alkenes such as pent-1-ene, oct-1-ene or dec-1-ene. Selectivities up to 70% in favour of E-1-arylalk-1-ene isomers can be obtained. In the presence of cyclic alkenes the selectivities of the reactions strongly depends on the ring size. Addition to cyclohexene or cycloheptene led mainly
cis,cis,cis -1,2,3,4-Tetrakis(diphenylphosphinomethyl)cyclopentane / [PdCl(C 3 H 5)] 2体系有效地催化芳基卤化物与线性烯烃(如戊-1-烯)的Heck反应,辛-1-烯或癸-1-烯。选择性高达赞成70%Ë -1- arylalk -1-烯异构体可制得。在环状烯烃的存在下,反应的选择性很大程度上取决于环的大小。除环己烯或环庚烯外,主要产生1-芳基环烷-3-烯衍生物。另一方面,除环辛烯外,还生成了1-芳基环烷-1-烯加合物。