Phosphine-Catalyzed Regioselective and Stereoselective Hydrohalogenation Reaction of 2-(1-Alkynyl)-2-alken-1-ones: Synthesis of 2-Halo-1,3-dienes
作者:Wenbo Li、Lihua Gao、Zhenting Yue、Junliang Zhang
DOI:10.1002/adsc.201500408
日期:2015.8.24
A triphenylphosphine (PPh3)‐catalyzed, regioselective and stereoselective hydrohalogenation reaction of 2‐(1‐alkynyl)‐2‐alken‐1‐ones with metal halides in the presence of acetic acid is described, furnishing functionalized 3,4‐disubstituted 2‐halo‐1,3‐dienes in moderate to good yields with high stereoselectivity and regiospecificity. The simple execution, mild conditions and the potential utilization
描述了在乙酸存在下,三苯基膦(PPh 3)催化2-(1-炔基)-2-烯键-1-酮与金属卤化物的区域选择性和立体选择性加氢卤化反应,提供功能化的3,4-二取代的2卤代1,3-二烯,中等至良好的产率,具有高立体选择性和区域特异性。简单的执行,温和的条件以及产品的潜在用途使该协议具有吸引力。