Unexpected reversal of regioselectivity in the palladium-catalysed addition of the tin-germanium bond to allenes
作者:Terence N. Mitchell、Ulrich Schneider、Beate Fröhling
DOI:10.1016/0022-328x(90)87134-y
日期:1990.3
Whereas the addition of tributyl(trimethylgermyl)stannane to 1-alkynes in the presence of tetrakis(triphenylphosphine)palladium proceeds regiospecifically, the direction of its addition to allenes is dependent on the structure of the allene.