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Sulfated Tin Oxide: An Immensely Potent and Reusable Catalyst for the Synthesis of Benzimidazole Derivatives
Author(s) -
Kagne Raju,
Niwadange Sandeep,
Kalalawe Virbhadra,
Gutte Raoji,
Munde Dashrath
Publication year - 2019
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201800238
Subject(s) - catalysis , benzimidazole , tin , tin oxide , sulfation , oxide , substrate (aquarium) , materials science , solvent , chemical engineering , chemistry , nuclear chemistry , organic chemistry , biochemistry , oceanography , engineering , geology
In this research, a new strategy for synthesis of benzimidazoles via condensing o‐phenylenediamine and substituted aldehydes by adopting prepared sulfated tin oxide as solid heterogenous catalyst in water ethanol system (1:1‐v/v) at reflux condition has been developed. The solid sulfated tin oxide is synthesized and confirmed by XRD, EDS map, SEM images, and FTIR. The reaction is optimized for different solvents and loading of catalyst. The yields of all benzimidazole derivatives are observed in the range of 80–94%. All the synthesized benzimidazoles are analyzed by spectral data. The use of ecologically benign catalyst sulfated tin oxide, solvent system, ample substrate scope with good atom economy, environmental affordability, and easy work up makes this protocol green.