Abstract
Various ethyl-2-substituted phenyl hydrazono-3-oxobutyrate (2a-h) condensation with 2-hydroxy benzoic acid hydrazide (3) to afford 1-(2-hydroxybenzoyl)-3-methyl-4-(2- substituted phenyl hydrazono)-1H-pyrazol-5(4H)-one (4a-h). The structures of all these compounds (4a-h) were recognized on basis of analytical and spectral data. The newly synthesized compounds were evaluated for their antimicrobial activity against various bacteria and fungi.
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