Trisubstituted pyridines are regioselectively synthesized through multicomponent and one-pot processes promoted by a bifunctional Pd-catalyst. The process involves formation of an enamine by Pd-catalyzed amination of an alkenyl bromide, formation of a 2-aza-1,3-butadiene by Pd-catalyzedcross-coupling of a trimethylsilylimine with an alkenyl bromide, and Lewis acid catalyzed cycloaddition between the
Using highly electron-rich monophosphine ligands, Suzuki cross-coupling of heteroaromatic chlorides with various boronic acids was carried out in high yields. High yields were also often observed when steric heteroaromatic chlorides were employed in Suzukicross-couplingreactions. Suzuki coupling - ClickPhos - heteroaromatic chlorides - palladium