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so3h-functionalized mcm-41 as an efficient catalyst for the combinatorial synthesis of 1h-pyrazolo-[3,4-b]pyridines and spiro-pyrazolo-[3,4-b]pyridines
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نویسنده
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safaei shirin ,mohammadpoor-baltork iraj ,khosropour ahmad reza ,moghadam majid ,tangestaninejad shahram ,mirkhani valiollah
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منبع
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journal of the iranian chemical society - 2017 - دوره : 14 - شماره : 7 - صفحه:1583 -1589
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چکیده
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Sulfonic acid-functionalized (so3h-functionalized) mesoporous mcm-41 catalyst was synthesized by anchoring 3-((3-(trimethoxysilyl)propyl)thio)propane-1-sulfonic acid onto mcm-41-type silica and characterized by ft-ir spectroscopy, elemental analysis and scanning electron microscopy (sem) techniques. the catalyst was used for the efficient multi-component synthesis of 1h-pyrazolo-[3,4-b]pyridines and spiro-pyrazolo-[3,4-b]pyridines. notably, the catalyst could be recycled and reused with negligible loss in activity over seven cycles.
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کلیدواژه
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supported acid catalyst ,1h-pyrazolo-[3 ,4-b]pyridines ,multi-component ,solvent-free
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آدرس
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university of isfahan, catalysis division, department of chemistry, iran, university of isfahan, catalysis division, department of chemistry, iran, university of isfahan, catalysis division, department of chemistry, iran, university of isfahan, catalysis division, department of chemistry, iran, university of isfahan, catalysis division, department of chemistry, iran, university of isfahan, catalysis division, department of chemistry, iran
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Authors
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