9-Oxo-2-(p-tolyl)-4,9-dihydropyrazolo[5,1-b]quinazoline-3a(3H)-carboxylic Acid

Compounds based on the pyrazoloquinazoline scaffold are of significant interest in synthetic organic chemistry owing to their potential biological activity. In this work, we describe the synthesis of a new derivative with this scaffold, 9-oxo-2-(p-tolyl)-4,9-dihydropyrazolo[5,1-b]quinazoline-3a(3H)-carboxylic acid, obtained by reacting 2,4-dioxo-4-(p-tolyl)butanoic acid with 2-aminobenzohydrazide in a 1:1 ratio when mixed in ethanol. The compound was characterized by 1H/13C NMR, IR, and X-ray diffraction analysis.