Silica-supported perchloric acid and potassium bisulfate as reusable green catalysts for nitration of aromatics under solvent-free microwave conditions M. Satish Kumar Y. Hemanth Sriram M. Venkateswarlu K. C. Rajanna M. Sai Sudhakar Purugula Venkanna P. K. Saiprakash 10.6084/m9.figshare.5528008 https://tandf.figshare.com/articles/journal_contribution/Silica_supported_perchloric_acid_and_potassium_bisulphate_as_reusable_green_catalysts_for_nitration_of_aromatics_under_solvent_free_microwave_conditions/5528008 <p>Silica-supported perchloric acid and bisulfate (SiO<sub>2</sub>/HClO<sub>4</sub> and SiO<sub>2</sub>/KHSO<sub>4</sub>) have been developed as reusable green catalysts for nitration of aromatic compounds using NaNO<sub>2</sub> in acetonitrile medium under conventional and solvent-free microwave conditions. The reaction times under microwave irradiation are significantly shorter than conventional method even though the yields obtained in microwave-assisted reactions are comparable with those obtained under reflux conditions.</p> 2017-12-15 19:16:34 Aromatic compounds microwave irradiation NaNO2 nitration rate acceleration SiO2/HClO4 SiO2/KHSO4