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)。