The (E)-bromides in 1,1-dibromo-1-alkenes were stereoselectively coupled wi
th aryl- or alkenylboronic acids to give the corresponding (Z)-1-Aryl(alken
yl)-1-bromo-1-alkenes. Tris(2-furyl)phosphine (TFP) was used as the ligand
to palladium, and the combination of 1,4-dioxane and aqueous sodium carbona
te produced the best results.