A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been developed. Using guanidine hydrochloride as a new catalyst and water-acetone as green solvent, dialkyl acetylenedicarboxylates were reacted with substituted phenols or naphthols in room temperature to produce vinyl aryl ethers in good to excellent yields.
开发了一种立体选择性的程序,通过在温和反应条件下直接耦合二烷基炔二酸酯和取代
酚或
萘醇来形成烯基芳醚键。采用
盐酸胍作为新催化剂,
水-
丙酮作为绿色溶剂,二烷基炔二酸酯在室温下与取代
酚或
萘醇反应,产率良好到优秀。