Mesoporous SBA‐15 Silica Phenylsulfonic Acid (SBA‐15‐Ph‐SO3H) as Efficient Nanocatalyst for One‐pot Three‐component Synthesis of 3‐Methyl‐4‐aryl‐2,4,5,7‐tetrahydropyrazolo[3,4‐b]pyridine‐6‐ones |
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Abstract: | A simple, economical, and efficient approach to the one‐pot synthesis of 3‐methyl‐4‐aryl‐2,4,5,7‐tetrahydropyrazolo3,4‐b]pyridine‐6‐ones by multicomponent assembling of 5‐methylpyrazol‐3‐amine, aldehydes, and Meldrum's acid using mesoporous silica phenylsulfonic acid (SBA‐15‐Ph‐SO3H) as recyclable and heterogonous solid acid nanocatalyst has been described. This protocol has the advantages of high yields, wide application scope, and an environmental benign procedure. |
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Keywords: | Mesoporous material Pyrazolo[3 4‐b]pyridine‐6‐ones Solid acid catalyst Multicomponent reaction |
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