作者:Hoai V. Dang、Bernd Knobloch、Nargues S. Habib、Thomas Kappe、Wolfgang Stadlbauer
DOI:10.1002/jhet.5570420112
日期:2005.1
4-Hydroxy-5-phenylpyrido[3,2,1-jk]carbazol-6-ones (4, 5), which were obtained from carbazoles 1 and malonates 2 or 3, were converted to reactive intermediates such as 4-chlorides 9 or 4-tosylates 10, which gave in turn 4-azido-5-phenyl derivatives 11. 5-Alkyl-4-azides 11 were not obtained in this manner; however a new one-pot azidation reaction was developed starting from 4-hydroxy derivatives 4 which
由咔唑1和丙二酸酯2或3获得的4-羟基-5-苯基吡啶并[3,2,1- jk ]咔唑-6-一(4,5)被转化为反应性中间体,例如4-氯化物9或4-tosylates 10,这又得到4-azido-5-phenyl衍生物11。不能以此方式获得5-烷基-4-叠氮化物11。然而,从4-羟基衍生物4开始开发了一种新的一锅叠氮化反应,其以良好的产率得到了叠氮化物11。4-叠氮基-5-苯基衍生物11f在热解后环化为吲哚12。通过热分析方法(DSC)研究了叠氮化物11的热行为。