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Silica-Supported Hclo4 and Khso4 As Reusable Green Catalysts For Sulfonation of Aromatic Compounds Under Solvent-Free Conditions
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نویسنده
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Fatima Touheeth ,Sriram Yeike Hemanth ,Kumar Mukka Satish ,Venkateswarlu Marri ,Rajanna Kamatala Chinna
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منبع
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Asian Journal Of Green Chemistry - 2017 - دوره : 1 - شماره : 2 - صفحه:69 -77
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چکیده
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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.
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کلیدواژه
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Green Reuasble Catalysts ,Nahso3 ,Sulfonation ,Aromatic Compounds ,Si-Supported Brønsted Acids
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آدرس
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Osmania University, Department Of Chemistry, India, Osmania University, Department Of Chemistry, India, Osmania University, Department Of Chemistry, India, Osmania University, Department Of Chemistry, India, Osmania University, Department Of Chemistry, India
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پست الکترونیکی
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kcrajannaou@yahoo.com
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Authors
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