Silica-supported HClO4 and KHSO4 as reusable green catalysts for sulfonation of aromatic compounds under solvent-free conditions
Journal Title: Asian Journal of Green Chemistry - Year 2017, Vol 1, Issue 2
Abstract
A green protocol is described for sulfonation of aromatic compounds that has been accomplished using sodium bisulfite (NaHSO3) in the presence of reusable green heterogeneous SiO2/HClO4 and SiO2/KHSO4 (Silica-supported HClO4 and KHSO4 catalysts) under conventional and solvent-free microwave irradiation. The reactions afforded very good yields of products within 3 to 5 hour under conventional conditions. However, the reaction times in microwave-assisted protocol are drastically reduced to 3 to 5 minutes (from 3 to 5 hour under conventional conditions) followed by increasing product yields. Moreover, the developed silica-supported catalysts could be recycled for at least three to four times.
Authors and Affiliations
Touheeth Fatima, Yeike Hemanth Sriram, Mukka Satish Kumar, Marri Venkateswarlu, Chinna Rajanna Kamatala
Keywords
Related Articles
- EP ID EP252344
- DOI 10.22631/ajgc.2017.95574.1016
- Views 126
- Downloads 0
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