Melamine Trisulfunic Acid: An Efficient and Recyclable Solid Acid Catalyst for the Synthesis of 4,4′‐(Arylmethylene)‐bis‐(1H‐pyrazol‐5‐ols) |
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| Authors: | Nasir Iravani Jalal Albadi Hamide Momtazan Mojtaba Baghernejad |
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| Institution: | 1. Department of Chemistry, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran;2. Young Researchers Club, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran |
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| Abstract: | Melamine trisulfunic acid is employed as a recyclable catalyst for the condensation reaction of aromatic aldehydes with 3‐methyl‐l‐phenyl‐2‐pyrazolin‐5‐one. This condensation reaction was performed in ethanol under refluxing conditions giving 4,4′‐(arylmethylene)‐bis‐(3‐methyl‐1‐phenyl‐1H‐pyrazol‐5‐ols) in 80‐96% yields. |
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| Keywords: | Melamine trisulfunic acid Aldehydes 3‐Methyl‐l‐phenyl‐2‐pyrazolin‐5‐one 4 4′ ‐(Arylmethylene)‐bis‐(3‐methyl‐1‐phenyl‐1H‐pyrazol‐5‐ols) |
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