Based on the different reactivity of selanyl and bromo groups,( E)-α- bromovinylselenides can undergo sequential cross coupling reactions with nucleophiles in the presence of transition metal complexes to form two carbon-carbon bonds in the same olefinic carbon leading to trisubstituted alkenes stereoselectively in good yields. Based on the different reactivity of selanyl and bromo groups, (E) -α-bromovinylselenides can conduct sequential cross-coupling reactions with nucleophiles in the presence of transition metal complexes to form two carbon-carbon bonds in the same olefinic carbon leading to trisubstituted alkenes stereoselectively in good yields