Sulfonic acid bonded on silica-coated silver nanoparticles as a heterogeneous catalyst promoted four-component preparation of pyrano2,3-cpyrazoles

Key Points

• Pyrano[2,3-c]pyrazoles are synthesized efficiently in this method, indicating a promising approach.
• The reaction employs sulfonic acid bonded to silica-coated silver nanoparticles for enhanced catalysis.
• Heterogeneous catalysis allows easier recovery and reuse of the catalyst, streamlining the process.
• Findings highlight the potential of this catalyst as a valuable tool in organic synthesis.