Logic design and synthesis of quinoxalines via the integration of iodination/oxidation/cyclization sequences from ketones and 1, 2-diamines
M Lian, Q Li, Y Zhu, G Yin, A Wu
Index: Lian, Mi; Li, Qi; Zhu, Yanping; Yin, Guodong; Wu, Anxin Tetrahedron, 2012 , vol. 68, # 47 p. 9598 - 9605
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Citation Number: 31
Abstract
A novel protocol for the synthesis of quinoxalines has been developed from simple ketones and 1, 2-diamines. This process underwent a logic approach to bis-substituted quinoxalines via a consecutive iodination/Kornblum oxidation/cyclization in the presence of I2/CuO/DMSO and to mono-substituted quinoxalines via an iodination/cyclization/aromatization in the presence of I2/CuO/K3PO4· 3H2O.
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