环戊[ b ]喹啉和环己[ b ]喹啉分别通过α-重氮酮与N-(2-环亚丙基甲基苯基)膦酰胺和N-(2-环丁烯甲基苯基)膦酰胺的反应制备。该反应以级联反应进行,涉及形成烯酮亚胺,6个π电子闭环和1,3-烷基转移。还开发了一种类似的方法,用于从N-(2-环亚丙基甲基苯基)膦酰胺和异氰酸酯合成二氢吡咯并- [2,3- b ]喹啉。
环戊[ b ]喹啉和环己[ b ]喹啉分别通过α-重氮酮与N-(2-环亚丙基甲基苯基)膦酰胺和N-(2-环丁烯甲基苯基)膦酰胺的反应制备。该反应以级联反应进行,涉及形成烯酮亚胺,6个π电子闭环和1,3-烷基转移。还开发了一种类似的方法,用于从N-(2-环亚丙基甲基苯基)膦酰胺和异氰酸酯合成二氢吡咯并- [2,3- b ]喹啉。
An iron‐catalyzed denitrogenative rearrangement of 1,2,3,4‐tetrazole is developed over the competitive C(sp3)–H amination. This catalytic rearrangement reaction follows an unprecedented metalloradical activation mechanism. Employing the developed method, a wide number of complex‐N‐heterocyclic product classes have been accessed. The synthetic utility of this radical activation method is showcased with
Rhodium-Catalyzed Synthesis of 2,3-Disubstituted Indoles from β,β-Disubstituted Stryryl Azides
作者:Ke Sun、Sheng Liu、Patryk M. Bec、Tom G. Driver
DOI:10.1002/anie.201006917
日期:2011.2.11
Rings à la carte: Rhodium carboxylate complexes catalyze selective cascade reactions to produce a range 2,3‐disubstituted indolesfromβ,β‐disubstituted stryrylazides. The selective migration of aryl groups appears to originate from a putative phenonium ion reactive intermediate (see scheme).