Regioselective Synthesis of Amino Substituted Indazolo[2,1‐b]phthalazine‐triones and Pyrazolo[1,2‐b]phthalazine‐2‐carbonitriles Catalyzed by 2‐1′‐Methylimidazolium‐3‐yl‐1‐ethyl Sulfate |
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| Authors: | Yu Wan Chao Wang Xiao‐xiao Zhang Jingjing Shi Shu‐ying Huang Gui‐Xiang Liu Liang‐feng Chen Ling‐ling Zhao Hai‐ying Wang Hui Wu |
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| Institution: | 1. Jiangsu Key Laboratory of Biotechnology on Medical Plant, Xuzhou, 221116, People's Republic of China;2. School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou, WPeople's Republic of China;3. Jiangsu Key Laboratory of Green Synthesis of Functional Material, Xuzhou, People's Republic of China |
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| Abstract: | The regioselective reactions of luminol with 1,3‐cyclohexanedione (or malononitrile) and aromatic aldehydes catalyzed by 2‐1′‐methylimidazolium‐3‐yl‐1‐ethyl sulfate were developed to synthesize 7‐amino‐3,4‐dihydro‐2H‐indazolo2,1‐b]phthalazine‐1,6,11(13H)‐triones and 3,9‐diamino‐5,10‐dihydro‐5,10‐dioxo‐1H‐pyrazolo1,2‐b]phthalazine‐2‐carbonitriles in good to excellent yields in short times. |
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