Yong-Chun Luo*, Yang Wang#, Run Shi#, Xu-Gang Zhang, Huan-Huan Zhang and Peng-Fei Xu*
https://doi.org/10.1021/acs.orglett.3c02068
Pyridinium 1,4-zwitterionic thiolates are usually used to develop ionic annulation reactions. However, radical reactions were rare. We developed a photoredox catalyzed [3 + 2]-annulation reaction of pyridinium 1,4-zwitterionic thiolates with alkenes, disclosed the new reactivity of pyridinium 1,4-zwitterionic thiolate, and provided a new synthetic method for dihydrothiophene.