Synthesis of functionalized alkenes by transition metal-catalyzed carbostannylations of alkynes and dienes followed by cross-coupling reactions

Transition metal-catalyzed carbostannylation of alkynes and 1,2-dienes provides alkenylstannanes having an alkynyl, alkenyl or acyl group with or without conjugation. The alkenylstannanes are transformed to various unsaturated compounds with diverse functionalized structures through palladium-catalyzed cross-coupling reactions with organic electrophiles.