Thianthrene Radical Cation as a Transient<scp>SET</scp>Mediator: Photoinduced Thiocyanation and Selenocyanation of Arylthianthrenium Salts<sup>†</sup>
作者:Xiao‐Yue Chen、Xin Kuang、Yichen Wu、Jian Zhou、Peng Wang
DOI:10.1002/cjoc.202300188
日期:2023.8.15
A novel transient SET mediator approach has been developed for the photoinduced radical-radical cross coupling reaction. Using the in-situ generated thianthrene radical cation as the transient SET mediator, the thiocyanation and selenocyanation of aryl thianthrenium salts have been realized under the mild conditions without the need for photocatalyst or single electron donor. In comparison with the
一种新型瞬态 SET 介体方法已被开发用于光诱导自由基-自由基交叉偶联反应。利用原位产生的噻蒽自由基阳离子作为瞬态SET介体,在温和条件下实现了芳基噻蒽鎓盐的硫氰化和硒氰化,无需光催化剂或单一电子给体。与光触媒工艺相比,该方案具有条件温和、操作简单、底物范围广泛、优异的官能团和杂环耐受性等特点。由于芳基噻啉鎓盐的可行可及性,该方法也已应用于生物活性分子的有效合成以及复杂芳烃的后期功能化。