Acyl Radicals from α-Keto Acids: Metal-Free Visible-Light-Promoted Acylation of Heterocycles
作者:Hu-Lin Zhu、Fan-Lin Zeng、Xiao-Lan Chen、Kai Sun、Hao-Cong Li、Xiao-Ya Yuan、Ling-Bo Qu、Bing Yu
DOI:10.1021/acs.orglett.1c00655
日期:2021.4.16
A general and metal-free visible-light-induced decarboxylative arylation procedure at room temperature was described for the construction of acylated heterocyclic derivatives, such as benzimidazo/indolo[2,1-a]isoquinolin-6(5H)-ones, aroylazaspiro[4.5]trienones, thioflavones, and so on. This practical arylation procedure was conducted by using 2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile (4CzIPN)
描述了一种在室温下通用且无金属的可见光诱导的脱羧芳基化方法,用于构建酰化杂环衍生物,例如苯并咪唑/吲哚并[ 2,1 - a ]异喹啉-6(5 H)-ones,芳酰基azaspiro [4.5]三烯酮,硫代黄酮等。通过在温和的条件下使用2,4,5,6-四(9 H-咔唑-9-基)间苯二甲腈(4CzIPN)作为光催化剂来进行该实用的芳基化步骤,避免了使用额外的碱,传统的加热,和金属试剂。