Aerobic Oxidative Coupling between Carbon Nucleophiles and Allylic Alcohols: A Strategy to Construct β-(Hetero)Aryl Ketones and Aldehydes through Hydrogen Migration
reaction: A highly efficient PdII‐catalyzed intermolecular oxidative‐coupling reaction is reported, inspired by the fundamental Heck and Wacker processes. The (hetero)aryl‐PdX species, originating from CHactivation step or desulfonyl hydrazides, coupled with allylic alcohols by using oxygen as the sole oxidant (see scheme).
A novel and practical approach to access saturated ketones from unsaturated ketone derivatives via a CS2/t-BuOK system in dimethyl sulfoxide (DMSO) is reported. The in situ generation of xanthate salt through the reaction of carbon disulfide and potassium tert-butoxide is essential to this transformation. Deuterium-labeling experiments demonstrated that DMSO can act as a hydrogen donor.