various E- and Z-1,1-diaryl and triarylolefins 3 was achieved from readily available vinylstannanes 1 via stereospecific iodo-destannylation and subsequent palladium-catalyzed Negishi-type cross-coupling reaction with arylzincreagentsundermildconditions.
<i>Ortho</i>Substituents Direct Regioselective Addition of Tributyltin Hydride to Unsymmetrical Diaryl (or Heteroaryl) Alkynes: An Efficient Route to Stannylated Stilbene Derivatives