Synthesis of 4‐Aryl‐3‐Methyl‐1‐Phenyl‐1H‐Benzo[h]Pyrazolo[3,4‐b]Quinoline‐5,10‐diones Using Diammonium Hydrogen Phosphate as an Efficient and Versatile Catalyst in Water |
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| Authors: | Li‐Qiang Wu Ruo‐Yi Dong Chun‐Guang Yang Fu‐Lin Yan |
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| Institution: | School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China |
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| Abstract: | A simple and efficient synthesis of 4‐aryl‐3‐methyl‐1‐phenyl‐1H‐benzoh]pyrazolo3,4‐b]quinoline‐5,10‐diones has been accomplished by the one‐pot condensation reaction of 3‐methyl‐1‐phenyl‐1H‐pyrazol‐5‐amine, aldehydes and 2‐hydroxynaphthalene‐1,4‐dione in water in the presence of diammonium hydrogen phosphate. |
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| Keywords: | Benzo[h]pyrazolo[3 4‐b]quinoline Diammonium hydrogen phosphate 3‐Methyl‐1‐phenyl‐1H‐pyrazol‐5‐amine 2‐Hydroxynaphthalene‐1 4‐dione |
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