Oxidation of 1,3,5-trisubstituted 4,5-dihydro-1H-pyrazoles to the corresponding pyrazoles has been achieved by utilizing tetrabromine-1,3,5,7-tetrazatricyclo[3.3.1.1 3,7 ]decane complex, Br -TATCD, in gla cial acetic acid under microwave irradiation and conventional thermal condition at room temperature with excellent yields
