I2/DMSO-Enabled Cascade Michael Addition/Oxidative Cyclization: Access to Imidazo[2,1-b][1,3,4]thiadiazoles

A straightforward protocol for accessing imidazo[2,1-b][1,3,4]thiadiazoles via I2-catalyzed tandem Michael addition-oxidative cyclization has been developed. Three-component approach to access imidazo[2,1-b][1,3,4]thiadiazoles from hydrazone, chalcone, and KSCN has been demonstrated. Both I2...