Comportement des organomagnesiens vis-a-vis de composes acetyleniques disubstitues en presence de PdCl2
作者:C. Broquet、H. Riviere
DOI:10.1016/s0022-328x(00)83386-0
日期:1982.2
In the presence of HMPT as a cosolvent, uncomplexed PdCl2 can be used in addition reactions of reducing or non-reducing Grignardreagents with disubstitutedacetylenic compounds. Stereospecific conjugated dienes are obtained in good yields together with dialkylation and reduction products.
Some alkynes were diarylated by aryltributylstannane 2 in the presence of palladium salt in moderate to good yield with high stereoselectivity. The reaction was catalytic in palladium using copper(II) chloride dihydrate as a reoxidant.