The Syntheses of 4-Arylamino-1,2,3-Triazoles and Stable 6-Sydnonyl Verdazyls from Sydnone Derivatives and Their Fragments
作者:Wen-Fa Kuo、I-Tzu Lin、Shiaw-Wen Sun、Mou-Yung Yeh
DOI:10.1002/jccs.200100110
日期:2001.8
prepared by a new synthetic route: α-chloroformylarylhydrazines hydrochlorides 2 reacted with corresponding carbonyl compounds. Reactions of compounds 3 with various hydrazines to give 6-sydnonyl-1,2,4,5-tetrazinan-3-ones 7 and/or carbazones 8 were also investigated. By oxidization with lead dioxide, compounds 7 were trans formed to stable 6-sydnonyl-3,4-dihydro-3-oxo-1,2,4,5-tetrazin-1(2H)-yl radical
α-氯甲酰基芳基腙 1 和 α-氯甲酰基芳基腙 3 的合成路线已通过新的合成路线制备:α-氯甲酰基芳基肼盐酸盐 2 与相应的羰基化合物反应。还研究了化合物 3 与各种肼生成 6-sydnonyl-1,2,4,5-tetrazinan-3-ones 7 和/或carbazones 8 的反应。通过用二氧化铅氧化,化合物 7 转化为稳定的 6-sydnonyl-3,4-dihydro-3-oxo-1,2,4,5-tetrazin-1(2H)-yl 自由基衍生物 9 (sydnonyl verdazyls) . 此外,在酸性条件下,松香酮甲醛芳基腙 5 可以转化为 4-芳基氨基-1,2,3-三唑 6,后者也是通过 4-甲酰基松香酮 10 的酸性分解获得的。