Acidic Nano Zeolite Clinoptillolite; Green and Heterogeneous Catalyst for One-Pot Multi-Component Synthesis of 3-Substituted-Amino Coumarins

Abstract

In this study, a novel acidic natural surface-modified nanoclinoptilolite (NCP@SiO₃PrHMTASO₃H) have been designed, synthesized, and fully characterized using various analytical techniques (Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDS), Transmission Electron Microscopy (TEM), and Thermogravimetric–Analyses (TG). In addition, NCP@SiO₃PrHMTASO₃H nanocatalyst have been found to catalyze effectively the multi-component synthesis of Manich base containing coumarin moiety under solvent-free condition. This novel heterogeneous catalyst is easily recycled and reused several times.

Keywords:

• Novel nanocatalyst
• NCP@SiO₃PrHMTASO₃H
• aminocoumarin
• green synthesis

Acknowledgments

The authors express appreciation to the Qom University of Technology for supporting this investigation.

Disclosure statement

No potential conflict of interest was reported by the authors.