Phosphine-Catalyzed Synthesis of 3-Allyl-4-pyrones by the Tandem Reaction of Diynones and Allylic Alcohols
作者:Ya-Fang Ye、Wan-Wan Yang、Jing-Wen Zhang、Ji-Ya Fu、Jun-Yan Zhu、Yan-Bo Wang
DOI:10.1021/acs.joc.1c01340
日期:2021.11.5
A simple and effective tandem reaction of diynones and allylic alcohols was developed to afford functionalized 3-allyl-4-pyrones in moderate to excellent yields. This protocol underwent a Michael addition─Claisen rearrangement─O-cyclization process, which exhibited broad substrate tolerance, high regioselectivity, and atom economy under a metal-free condition. Moreover, functional transformation of
开发了一种简单有效的二炔酮和烯丙醇的串联反应,以中等至优异的产率提供官能化的 3-allyl-4-pyrones。该协议经历了迈克尔加成─克莱森重排─O-环化过程,在无金属条件下表现出广泛的底物耐受性、高区域选择性和原子经济性。此外,还进一步研究了产品的功能转化。