Synthesis and Application of Nano Vanadium-Oxo Pyridiniumporphyrazinato Sulfonic Acid for Synthesizing Pyrazole and Dihydropyrano[2,3]pyrazole Derivatives

In this study, we presented a description of designing and synthesizing an original nano-N-sulfonated (-SO3H) phthalocyanine molten salt (vanadium-oxo pyridiniumporphyrazinato sulfonic acid) [VO(TPPASO(3)H)]Cl as a recyclable and efficient heterogeneous catalyst with thermal stability for synthesizing pyrazole and dihydropyrano([2,3])pyrazole derivatives. After recycling and reapplying five times, this catalyst indicated no significant decrease in the catalytic activity.

Automated summary

This study presents the design and synthesis of a nano-N-sulfonated phthalocyanine molten salt catalyst for synthesizing pyrazole and dihydropyrano [2,3] pyrazole derivatives. After multiple recycling and reapplication, the catalyst maintains its catalytic activity.