Synthesis of Some New Imidazo[1,2-b] Pyridazines

Several 2,6-diaryl-imidazo[1,2-b]pyridazines (5 & 7) were prepared from 3-amino-6-aryl-pyridazines (3) which in turn were obtained from the corresponding 6-aryl-pyridazine-3(2H)-ones(1) via., 6-aryl-pyridazin-3(2H)-thiones (2) as intermediates, by a reaction with an appropriate a-halocarbonyl compounds (4) or a-haloacyl carbamates (6) in a suitable solvent at reflux temperature. The resulted products were characterized by their physical, analytical and spectral data.