1,4‐Diazabicyclo[2.2.2]octane‐Catalyzed One‐Pot Synthesis of Pyrazolo[1,2‐a][1,2,4]triazole‐1,3‐diones under Ultrasound Acceleration |
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| Authors: | Davood Azarifar Razieh Nejat‐Yami Mohammad Ali Zolfigol |
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| Institution: | Faculty of Chemistry, University of Bu‐Ali Sina, , 65178 Hamedan, Iran |
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| Abstract: | 1,4‐Diazabicyclo2.2.2]octane has been explored as an efficient catalyst to effect the three‐component condensation reactions between malononitrile, 4‐arylurazoles, and aromatic aldehydes in ethanol under ultrasound irradiation conditions. The reactions proceeded very rapidly under mild conditions to furnish the corresponding pyrazolo1,2‐a]1,2,4]triazole‐1,3‐dione derivatives in excellent yields. |
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