Environmentally benign synthesis of sydnone containing Environmentally benign synthesis of sydnone containing

Novel, convenient and benign synthesis of 2-arylamino-5-(3′-arylsydnone-4-yl)-1,3,4-thiadiazines 3a–l by the interaction of 3-substituted-4-bromoacetyl sydnones 1 with substituted thiosemicarbazides 2 under MW irradiation and solvent-free condition is described.