K. P. Srivastava

Environmentally Benign Approach to the Synthesis and Biological Evaluation of Derivatives of Pyrrolo[2,3-b]pyridine

Ranjan Kumar Singh & K. P. Srivastava · International Research Journal of Pure and Applied Chemistry · 2026

A series of novel 7-(phenacyl)-1H-pyrrolo[2,3-b]pyridinium bromide analogues was synthesised using an environmentally benign and efficient protocol. The methodology involved the direct N-alkylation of 1H-pyrrolo[2,3-b]pyridine with substituted phenacyl bromides under mild conditi...

Open access Research Article 10.9734/irjpac/2026/v27i41012

Solvent-Free Microwave-Assisted Green Synthesis and Antimicrobial Evaluation of 2-(1H-Benzimidazol-2-yl) Benzoic Acid and its Analogues Using Recyclable PPA-SiO₂ Catalyst

Kaushal Kishor Prasad & K. P. Srivastava · International Research Journal of Pure and Applied Chemistry · 2026

A sustainable and environmentally benign synthetic approach for the preparation of 2-(1H-benzimidazole-2-yl) benzoic acid (BZ–BA) and a structurally modified derivative (BZ–BA–X) is reported here. The target benzimidazole framework was efficiently synthesized via a solvent-free m...

Open access Research Article 10.9734/irjpac/2026/v27i2989