Palladium-catalyzed multicomponent coupling reactions serve as powerful tools for the construction of complex molecules. Studies aimed at incorporation of novel organopalladium intermediates into multicomponent coupling schemes have the potential to uncover valuable new synthetic protocols. Recent reports showed that allylpalladium complexes bearing η1-bonded allyl fragments reacted with electrophiles, effectively realizing an umpolung of the traditional reactivity of π-allylpalladium(II) complexes with nucleophiles. We envisioned that palladium(II) catalysts could react with allenes and organometallic reagents (boronic acids) to assemble in situ an allylpalladium complex, which would under suitable conditions transfer regioselectively the "preassembled" allyl fragment to organic electrophiles (aldehydes and imines). In this presentation, development of this concept, utilizing both allylpalladium(II) dimer catalyst with "nontransferable" auxiliary allyl ligands and commercially available Pd(OAc)₂/PR₃ catalysts will be described, as well as the application of the new methodology to the synthesis of highly substituted homoallylic alcohols, amines, unnatural amino acids and δ-lactones.