Palladium-Catalyzed Carbonylative Coupling of Aryl Iodides and Benzyl Acetylenes to 3-Alkylidenefuran-2-ones under Mild Conditions and Its Density Functional Theory Modeling
A general and efficient method for the palladium‐catalyzed carbonylativecoupling of aryliodides to benzylacetylenes has been developed. Various furanones have been prepared in excellent yields from their corresponding benzylacetylenes at room temperature under a CO atmosphere. For aliphatic alkynes, their corresponding alkynones were obtained in good yields. Detailed DFT calculations have also
Convenient and General Palladium-Catalyzed Carbonylative Sonogashira Coupling of Aryl Amines
作者:Xiao-Feng Wu、Helfried Neumann、Matthias Beller
DOI:10.1002/anie.201104653
日期:2011.11.18
Bar (alky)none: A general and efficient method for carbonylative Sonogashira coupling reactions of anilines to generate alkynones has been developed (see scheme; TFP=tri(2‐furyl)phosphine). The reaction proceeds under mild conditions and no base is needed.
library of functionalized arylpyridines of pharmacological interest. The starting 5-iodopyridines have been prepared from α,β-alkynic ketones, involving conjugate addition of propargylamine to alkynones, followed by metal-catalyzed cross-coupling of the resulting N-propargylicβ-enaminones with aryl iodides and electrophilic cyclization with molecular iodine.