Abstract A novel K2S2O8-mediated oxy-1,1-dihalogenation of alkynes with NaX in the presence of water has been developed, affording α,α-dihaloacetophenones in moderate to good yields. The advantages of this reaction are mild reaction conditions, operational simplicity, and use of pure water as reaction medium. A plausible reaction mechanism is proposed on the basis of mechanistic studies. GRAPHICAL
摘要 开发了一种新型 K2S2O8 介导的
炔烃与 NaX 在
水存在下的 oxy-1,1-二卤化反应,以中等至良好的收率得到 α,α-二卤代
苯乙酮。该反应的优点是反应条件温和,操作简单,可以使用纯
水作为反应介质。在机理研究的基础上提出了一个合理的反应机理。图形概要