A facile and efficient method for the synthesis of alkynone by carbonylative Sonogashira coupling using CHCl<sub>3</sub>as the CO source
作者:Guanglong Sun、Min Lei、Lihong Hu
DOI:10.1039/c6ra02424f
日期:——
A facile and efficient method for the synthesis of alkynones by a Pd-catalyzed carbonylative Sonogashira coupling reaction starting from aryl iodide, terminal alkyne and chloroform (CHCl3) as the CO source is described. This procedure proves that CHCl3 is a cheap and efficient CO source in the presence of CsOH·H2O as the base. Furthermore, it is applied successfully for the modification of natural
描述了一种通过Pd催化的羰基化Sonogashira偶联反应(以芳基碘化物,末端炔烃和氯仿(CHCl 3)为原料)开始合成炔烃的简便有效的方法。该程序证明,在以CsOH·H 2 O为碱的情况下,CHCl 3是一种廉价而有效的CO源。此外,它已成功地用于天然产物的修饰,如长春花碱和大黄素,从而以高收率获得了相应的产物。