Highly selective preparation of a chiral quaternary allyl aryl piperidinedione by palladium-catalyzed asymmetric allylation under solid-liquid phase-transfer catalysis

The combination of a chiral palladium catalyst and a solid-liquid phase-transfer catalyst provides an effective method for the chemo- and enantioselective preparation of the chiral quaternary center of an allyl aryl piperidinedione. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007.