A Halogen-Atom Transfer (XAT)-Based Approach to Indole Synthesis Using Aryl Diazonium Salts and Alkyl Iodides
作者:Sebastian Govaerts、Kento Nakamura、Timothée Constantin、Daniele Leonori
DOI:10.1021/acs.orglett.2c02840
日期:2022.11.4
among the most important N-heterocycles in pharmaceuticals. Here, we present an alternative to the classic Fischer indole synthesis based on the radical coupling between aryl diazoniums and alkyl iodides. This iron-mediated strategy features a double role for the aryl diazoniums that sequentially activate the alkyl iodides through halogen-atom transfer and then serve as radical acceptors. The process
吲哚是药物中最重要的N-杂环化合物之一。在这里,我们提出了一种基于芳基重氮和烷基碘之间的自由基偶联的经典 Fischer 吲哚合成的替代方法。这种铁介导的策略具有芳基重氮盐的双重作用,芳基重氮盐通过卤素原子转移依次激活烷基碘,然后充当自由基受体。该过程在温和的条件下运行,可以制备致密功能化的吲哚。