Convenient Synthesis, Characterization of Some Novel Subs-Tituted 3-Methyl-2-Pyrazoline-5-ones and Substituted 3,5-Dimethyl Pyrazoles

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Some of the pyrazolones and pyrazoles bearing different functional groups, substituted pyrazolones were synthesized by the condensation reaction of newly synthesized substituted thio-semicarbazide (1a, 2a) with substituted ethyl aceto hydrazone (a1-g1) in the presence of glacial acetic acid as a catalyst, they are coloured solid, having high melting points. Substituted pyrazoles have been synthesized by the condensation of newly synthesized substituted thiosemicarbazide (1a, 2a) with substituted phenyl benzene-azo acetyl acetone hydrazone (a2 - i2) and glacial acetic acid used as a medium in all condensation reactions. The constitution of the newly synthesized substituted pyrazolones and substituted pyrazoles are characterized by their physical properties, elemental analysis, spectral studies like IR.

Substituted Thiosemicarbazides; Pyrazolones; Pyrazoles; GAA; Synthesis; Characterization; Spectral Analysis