Solvent free, environment benign synthesis of 1,4 - dihydropyridines and polyhydroquinolines by using heterogeneous Zn/MCM - 41 catalyst

摘要: Heterogeneous catalysis has been utilized in number of efficient reactions with higher selectivity the product, more stable, reusable and easy for separation as compared to homogeneous catalysts. Generally, heterogeneous catalysts are prepared by using mesoporous materials, microporous metal oxides organic framework. The materials have small particle size high surface area materials. adsorbent highly therapeutic applications chemistry hence it best other Herein, we reported synthesis 1,4-dihydropyridines polyhydroquinolines at solvent free environmental benign condition presence Zn/MCM-41 catalyst. present protocol gives excellent yield (89–96%) product within short reaction time work up procedure no need further purification product. catalyst was characterized XRD diffractometer, SEM, EDAX, TGA-DTA, BET analysis FT-IR Spectroscopy. synthesized compounds were FT-IR, 1H NMR, 13C LC–MS spectrometry.