Studies on the Oxidative Addition Reaction of 1,1-Dibromo-1-alkenes, α-Dehalopalladation, and the Intramolecular Bis(carbopalladation) Reaction of Alkenes. An Efficient Entry to Fused Bicycles
作者:Shengming Ma、Bin Xu、Bukuo Ni
DOI:10.1021/jo005542d
日期:2000.12.1
alkylation methods. The oxidative additionreactions of 1,1-dibromo-2,2-diphenylethene or 1, 1-dibromo-2-phenylpropene with a stoichiometric amount of Pd(PPh(3))(4) afforded 1,2-diphenylacetylene and 1-phenylpropyne, respectively, indicating that alpha-dehalopalladation reaction occurred to afford vinylic carbene intermediates. However, alpha-dehalopalladation reaction was not observed in all 1, 1-dihalo-1-alkenes