A General Cyclocarbonylation of Aryl Bromides and Triflates with Acetylenes: Palladium-Catalyzed Synthesis of 3-Alkylidenefuran-2-ones
作者:Xiao-Feng Wu、Basker Sundararaju、Pazhamalai Anbarasan、Helfried Neumann、Pierre H. Dixneuf、Matthias Beller
DOI:10.1002/chem.201101083
日期:2011.7.11
Making use of CO: An improved efficient synthesis of 5‐aryl‐3‐alkylidenefuran‐2‐ones has been developed (see scheme). Starting from readily available (hetero)arylbromides or aryltriflates and alkynes, furanones were produced in good yields through a double carbonylation process. To illustrate the generality of the method more than 25 furanone derivatives were synthesized, including the permethylated