Vilsmeier-Haack reaction of substituted phenyl hydrazone derivatives (1a-j) afforded 1,3-substituted diphenyl-1H-pyrazole-4-carbaldehydes (2a-j). Compounds (2a-j) on condensation with malonic acid gave (2E)-3-(1,3-substituted diphenyl-1H-pyrazol-4-yl)acrylic acids (3a-j) which on reaction with thionyl chloride afforded acryloyl chlorides. The reaction of acryloyl chlorides with anthranilic acid gave 2-({(2E)-3-(1,3-substituted diphenyl-1H-pyrazol-4-yl)prop-2-enoyl}amino) benzoic acids (4a-j) in good yields. The structures of the newly synthesized compounds have been confirmed on the basis of physical and spectral data. Some of the synthesized compounds have shown significant anti-inflammatory activity.
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