Synthesis of Novel 4-(4-Methoxybenzene Sulphonyl)-3, 5-Dimethyl/3-Methyl-5-Phenyl/3, 5- Diphenyl/3, 5-Dimethyl-1-Phenyl/3- Methyl -1, 5- Diphenyl /1, 3, 5-Triphenyl Pyrazole

Abstract

An efficient synthesis of novel 3, 4, 5-trisubstituted pyrazole (2a-c) and 1, 3, 4, 5-tetrasubstituted pyrazole (2d-f) by the reaction of (1a-c) with NH2-NH2/phenyl hydrazine in absolute C2H5OH.The structure of the various pyrazole derivatives (2a-f) has been elucidated from elemental analysis and spectral studies viz. IR, NMR.