Visible-light photocatalytic trifluoromethylthiolation of aryldiazonium salts: conversion of amino group into trifluoromethylthiol group

A visible-light photocatalytic trifluoromethylthiolation of aryl amine through in situ generation of aryldiazonium salts as key intermediates was achieved with S-trifluoromethyl 4-methoxylbenzenesulfonothioate for the first time. The mild reaction conditions and readily accessible reagents provide a practical protocol to prepare aryl trifluoromethylthioether.