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Ga(ClO4)3-catalyzed Reaction of 1,2-Diamines and α-Bromoketones: Synthesis of 2-Substituted Quinoxalines |
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| Authors: | JI Yun-fei CHEN Tang-ming MAO Hai-feng ZOU Jian-ping |
| Institution: | Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, P. R. China |
| Abstract: | Ga(ClO4)3-catalyzed reaction of 1,2-aryldiamines and α-bromoketones to afford 2-substituted quinoxa- lines in good yields is described. The reaction proceeded via grinding process with 10%(molar fraction) catalyst under solvent-free conditions at room temperature. For unsymmetrical o-phenylenediamines bearing electron-with- drawing groups, regio-selective quinoxalines were obtained. |
| Keywords: | Ga(ClO4)3 1 2-Aryldiamine α-Bromoketone 2-Substituted quinoxaline Solvent-free reaction |
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