Iodine-catalyzed synthesis of 2-arylpyrazolo[5,1-b]quinazolin-9(3H)-one derivatives in ionic liquids via domino reaction |
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| Institution: | 1. Department of Vascular Surgery, Second Xiangya Hospital of Central South University, Changsha, China;2. Department of Cardiology, Second Xiangya Hospital of Central South University, Changsha, China |
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| Abstract: | The domino reaction of (E)-2-amino-N′-(1-arylethylidene)benzohydrazide and triethyl orthoformate in ionic liquids catalyzed by 10 mol % iodine gave 3a,4-dihydro-2-arylpyrazolo5,1-b]quinazolin-9(3H)-one derivatives unexpectedly. In the presence of K2S2O8, it could be oxidized to aromatized products in good yields. |
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| Keywords: | Pyrazoloquinazoline Domino reaction Iodine Synthesis |
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