α-Heteroarylation of Thioethers via Photoredox and Weak Brønsted Base Catalysis
作者:Edwin Alfonzo、Sudhir M. Hande
DOI:10.1021/acs.orglett.1c02151
日期:2021.8.6
thioethers to α-thio alkyl radicals and their addition to N-methoxyheteroarenium salts for the redox-neutral synthesis of α-heteroaromatic thioethers. Studies are consistent with a two-step activation mechanism, where oxidation of thioethers to sulfide radical cations by a photoredox catalyst is followed by α-C–H deprotonation by a weak Brønsted base catalyst to afford α-thio alkyl radicals. Further,