MCM 41 supported perchloric acid catalytic system: A Versatile and Recyclable Heterogeneous Catalyst for Solvent- Free Green Synthesis of Novel 1,4-Dihydropyrano[2,3- c]pyrazole Heterocycle and Its Molecular Docking Studies

Herein, we synthesized novel 1,4-Dihydropyrano[2,3-c]pyrazole heterocycle using a solvent-free approach with recyclable MCM 41 supported perchloric acid catalytic system. The reaction was carried out via multi-component one pot synthesis involving 1,3- Dimethyl barbituric acid, 4-Dimethyl amino benzaldehyde, acetoacetic ester and hydrazine hydrate at room temperature. MCM 41 supported perchloric acid catalytic system was known for its high catalytic activity compared to conventional heterogeneous catalysts, potentially reducing energy consumption and raw material usage in various chemical processes. The synthesized novel compound was characterized using ¹HNMR and FT- IR spectroscopic techniques. The biological significance of the newly synthesized compound was further validated through in silico docking studies. Computational analyses were conducted using software such as Auto Dock Vina, Discovery Studio, and Open Babel etc. This research highlights the synthesis of a pyrazole derivative via an environmentally sustainable approach, employing a recyclable catalyst. This work not only contributes to the field of medicinal chemistry but also adheres to the principles of green chemistry. Additionally, the docking studies demonstrated that the novel heterocyclic framework exhibits potential as an antimicrobial agent.