Gold(I)-Catalyzed Intramolecular Hydroarylation of Phenol-Derived Propiolates and Certain Related Ethers as a Route to Selectively Functionalized Coumarins and 2<i>H</i>-Chromenes
作者:Aymeric Cervi、Yen Vo、Christina L. L. Chai、Martin G. Banwell、Ping Lan、Anthony C. Willis
DOI:10.1021/acs.joc.0c02011
日期:2021.1.1
Methods are reported for the efficient assembly of a series of phenol-derived propiolates, including the parent system 56, and their Au(I)-catalyzed cyclization (intramolecular hydroarylation) to give the corresponding coumarins (e.g., 1). Simple syntheses of natural products such as ayapin (144) and scoparone (145) have been realized by such means, and the first of these subject to single-crystal
报道了有效组装一系列由苯酚衍生的丙酸酯的方法,包括母体系统56,以及它们的Au(I)催化的环化(分子内氢芳基化),得到相应的香豆素(例如1)。通过这样的方法已经实现了天然产物例如ayapin(144)和scoparone(145)的简单合成,并且首先对它们进行单晶X射线分析。描述了一种用于将诸如156的炔丙基醚转化为天然存在的少年激素生物合成抑制剂的异构体2 H-苯并二茂烯I(159)的方法。