Site Selectivity in Reactions of Hydrazonoyl Halides With 2-Amino-3-quinoxalinethiol: A New General Access to Functionalized 4H-1,3,4-Thiadiazino-[5,6-b]quinoxalines
作者:Ahmad Sami Shawali、M. A. N. Mosselhi、Thoraya A. Farghaly
DOI:10.1080/104265090921100
日期:2005.10
The synthesis of various 2,4-disubstituted 4H-1,3,4-thiadiazino-[5,6-b]quinoxalines via reaction of hydrazonoyl halides with 2-amino-3-quinoxalinethiol in ethanol in the presence of sodium ethoxide is described. The structures of the reaction products were elucidated by chemical evidence and by their IR, 1 H, 13 C-NMR, and MS spectra. The mechanism of the formation of the products is also discussed
描述了在乙醇钠存在下,通过腙酰卤与 2-氨基-3-喹喔啉硫醇在乙醇中的反应合成各种 2,4-二取代的 4H-1,3,4-噻二嗪基-[5,6-b] 喹喔啉. 反应产物的结构通过化学证据和它们的 IR、 1 H、 13 C-NMR 和 MS 光谱阐明。还讨论了产物的形成机制。