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263. Chem. Commun. 2023, 59, 12467

date:2024-02-26

Synthesis of benzo[f][1,2]thiazepine 1,1-dioxides based on the visible-light-mediated aza Paternò–Büchi reaction of benzo[d]isothiazole 1,1-dioxides with alkenes


Yi-Lin Wang,   Peng-Xiang Liu,  Huan-Huan Zhang,  Peng-Fei Xu   and  Yong-Chun Luo 


https://doi.org/10.1039/D3CC03745B








Abstract:A new two-step, one-pot synthesis of benzo[f][1,2]thiazepine 1,1-dioxides was developed, which contains a visible-light mediated aza Paternò–Büchi reaction of benzo[d]isothiazole 1,1-dioxides with alkenes and a Lewis acid catalyzed ring-expansion of azetidine. In this work, the mechanism of the aza Paternò–Büchi reaction was also investigated.