Synthesis of ethynylidene cyclopentanes by a cyclisation catalyzed by the simultaneous presence of palladium (0) and copper (I)
作者:Didier Bouyssi、Geneviève Balme、Jacques Gore
DOI:10.1016/0040-4039(91)80215-r
日期:1991.11
Ethynylidene cyclopentanes can be formed in 35–71% yield from the reaction of the enolates of compounds such as δ-acetylenic malonates with 1-halogeno-1-alkynes. This reaction requires catalysis by both palladium (0) and copper (I) species.
Palladium(II)-catalyzed coupling reactions of alkynes and allylic compounds initiated by intramolecular carbopalladation of alkynes
作者:Guosheng Liu、Xiyan Lu
DOI:10.1016/s0040-4039(02)01512-5
日期:2002.9
Under divalent palladium catalysis, a highly regio- and stereoselectivecoupling reaction of alkynes with allylhalides initiated by cyclocarbopalladation of alkynes proceeded smoothly in the presence of excess halide ions. The reaction involves intramolecular carbopalladation, allylic compound insertion into the vinylicPd bond and quenching the CPd bond by β-heteroatom elimination in one step without