Palladium-catalyzed epimerization of γ-alkenyl-γ-butyrolactone derivatives
摘要:
gamma-Alkenyl-alpha,beta,gamma-trisubstituted-gamma-butyrolactones (12-16) and gamma-alkenyl-furofurandione derivatives (21-Z-24-Z; 21-E-24-E; 25-Z-28-Z; and 25-E-28-E) were successfully epimerized in high yield by a palladium catalyst. (C) 2010 Elsevier Ltd. All rights reserved.