Free radical and palladium-catalysed hydrostannation of allenes: a comparison
作者:Terence N. Mitchell、Ulrich Schneider
DOI:10.1016/0022-328x(91)86272-r
日期:1991.3
While free radical hydrostannation of monosubstituted allenes with Me3SnH affords mixtures of varying composition, cyclohexylidene allene is attacked by the stannyl radical preferentially at the central carbon atom. In contrast, palladium-catalysed hydrostannation involves a regioselective attachment of the organotin moiety to the less highly substituted terminal carbon atom of the allene framework