Facile synthesis of coumaronochromones through palladium-catalyzed intramolecular cross dehydrogenative coupling
作者:Chang-Xue Gu、Jian-Guo Liu、Wen-Wen Chen、Ming-Hua Xu
DOI:10.1016/j.tet.2021.132048
日期:2021.4
An efficient base-free palladium-catalyzed intramolecular cross dehydrogenative coupling of 2-aryloxy substituted 4-chromenones to access coumaronochromones has been achieved. A range of diversely substituted coumaronochromones can be facilely synthesized in good to excellent yields (up to 90%).
已经实现了2-芳氧基取代的4-色酮的有效的无碱钯催化的分子内交叉脱氢偶联,以接近香豆酮色酮。可以容易地合成各种不同取代的香豆金属色酮(产率高达90%)。