• Ms.Harshala Davane
• Ms.Jyoti DharmodeMs.
• Shraddha Deshmukh
• Ms.Sonali Dagale
• Mr.Atharv Desale

The plethora subscribed in this research has been directed towards the green method of synthesis. Using different green catalyst, the novel coumarin derivatives were synthesized by pechmann condensation. Green chemistry is processes that reduce or eliminate the use or generation of hazardous substances. Green catalyst play important role in chemical processes by replacing hazardous reagents under solvent free condition. We use different green catalysts for the synthesis. Green catalyst like ZrOCl2.8H2O/SiO2 and HClO4•SiO2 are used in the synthesis. Some mannich bases of 7- hydroxycoumarin and their simple derivatives are synthesized. Also, some derivatives are synthesized from 4-methyl chlorocoumarin. The structure of the synthesized compounds were established by using melting point, FTIR, 1H-NMR.

Key-words: Coumarin, Green catalyst, HClO4.SiO2, ZrOCl2.8H2O/SiO2, FTIR.

"SYNTHESIS OF COUMARIN SCAFFOLD USING GREEN CATALYST.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 1, page no.b344-b359, January-2025, Available :http://www.jetir.org/papers/JETIR2501164.pdf

"SYNTHESIS OF COUMARIN SCAFFOLD USING GREEN CATALYST.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 1, page no. ppb344-b359, January-2025, Available at : http://www.jetir.org/papers/JETIR2501164.pdf