摘要:
Exposure of dihydropyridinone 1 to the arylbismuth(V) reagent (p-F-Ph)(3)BiCl2 in the presence of substoichiometric quantities of tributylphosphine (10 mol %) results in aryl transfer to the transiently generated (beta-phosphonio)enolate to provide the alpha-arylated enone 2. This transformation, which represents a regiochemical complement to the Mizoroki-Heck arylation, is used strategically in concise formal and enantioselective total syntheses of the blockbuster antidepressant (-)-paroxetine (PAXIL). (c) 2006 Elsevier Ltd. All rights reserved.