Pd-Catalyzed Selective Carbonylative and Non-carbonylative Couplings of Propiolic Acid: One-Pot Synthesis of Diarylalkynones
作者:Wonyoung Kim、Kyungho Park、Ahbyeol Park、Juseok Choe、Sunwoo Lee
DOI:10.1021/ol4004349
日期:2013.4.5
Diarylalkynones were synthesized from one-potPd-catalyzedcarbonylative and noncarbonylative coupling reactions of propiolicacid with aryl iodides under a carbon monoxide atmosphere. Aryl iodide (2.0 equiv), propiolicacid (1.0 equiv), Pd(PPh3)2Cl2 (5 mol %), CuCl (10 mol %), Et3N (6.0 equiv), and CO (8 atm) were reacted under optimized conditions in CH3CN at 80 °C for 1 h. This process afforded