Palladium-catalysed dimerization–double stannation of 1,3-dienes using hexamethyldistannane
Abstract
Hexamethyldistannane 1a reacts with 1,3-dienes 2 highly regio- and stereo-selectively in the presence of a catalytic amount of bis(dibenzylideneacetone)palladium to afford dimerization–double-stannation adducts 3 in high yields.