Abstract
AbstractSix‐ or seven‐membered dibenzosultams were synthesized upon treatment of N‐aryl‐ or N‐benzyl‐2‐halobenzenesulfonamides with HCOONa ⋅ 2H2O in DMSO without using additional measures and additives, such as light irradiation, electrochemical apparatus, transition metals, and oxidants. Further functionalization of the free NH group of the resultant dibenzosultams demonstrates the synthetic practicability of this method.magnified image
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