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。
Synthesis and ring closure reactions of pyrido[3,2,1-<i>jk</i>]carbazol-6-ones
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。
Amination of pyrido[3,2,1-<i>jk</i>]carbazol-6-ones
作者:Hoai V. Dang、Wolfgang Stadlbauer
DOI:10.1002/jhet.5570430110
日期:2006.1
Amination of 4-hydroxypyridocarbazolones 1 with aniline or benzylamine gave in good yields 4-amines 3. With piperidine in a sealed tube from 4-hydroxy- or 4-chloro-5-alkylpyridocarbazolones 1 or 4 ring opened 1-acylcarbazoles 5 were obtained. Only 4-hydroxy-5-phenyl-pyridocarbazolone 1d gave 4-amines 6. Reduction of 4-azidopyridocarbazolones 7 either by catalytic hydrogenation or in a 2-step synthesis
用苯胺或苄胺将4-羟基吡啶并咔唑酮1胺化,得到4-胺3的产率很高。用哌啶在密封管中从4-羟基-或4-氯-5-烷基吡啶并咔唑酮1或4开环得到1-酰基咔唑5。仅4-羟基-5-苯基-吡啶并咔唑酮1d给出4-胺6。通过催化氢化或在两步合成中通过磷腈8还原4-叠氮吡啶并咔唑酮7得到4-氨基吡啶并咔唑酮9。胺9也可从苄胺3中获得通过催化脱苄基作用。4-羟基-5- phenylpyridocarbazolone的一个步骤胺化1D 通过脱苄基化至9d中是通过用苄基氯化铵反应观察到。在升高的温度下,从1d开始形成高度熔融的6,13b-二氮杂茚并[1,2,3- hi ] chrysenone 10。
Synthesis and reactions of pyrido[3,2,1-jk]carbazole-4,6-diones
作者:Wolfgang Stadlbauer、Hoai Van Dang、Bernd Knobloch
DOI:10.1002/jhet.600
日期:2011.9
Pyrido[3,2,1‐jk]carbazoles 1, synthesized from carbazoles and alkyl‐ or arylmalonates, gave regioselective electrophilic substitution reactions at position 5 such as chlorination to 5‐chloro derivatives 2, nitration to 5‐nitro compounds 3, or hydroxylation to 5‐hydroxy derivatives 4. 5‐Hydroxy compounds 4 gave on treatment with strong bases ring contraction to 5, 6 or the ring opening product 7. Exchange
由咔唑和烷基丙二酸或芳基丙二酸酯合成的Pyrido [3,2,1– jk ]咔唑1在位置5发生区域选择性亲电取代反应,例如氯化成5-氯衍生物2,硝化成5-硝基化合物3或羟基化5羟基衍生物4。5-羟基化合物4介绍了用强碱环收缩处理,以5,6或开环产物7。氯基团的交换在2与叠氮或胺,得到相应的叠氮化物8和5-氨基衍生物9和10。的烷基化1与苄基氯或烯丙基溴导致了5-C-烷基化产物的形成11与4-烷氧基衍生物一起12。J. Heterocyclic Chem。,48,1039(2011)。