ethylphenyl) phosphanimine, respectively. The reaction proceeds in a cascade involving ketenimine formation, 6 π‐electron ring closure, and 1,3‐alkyl shift. A similar approach was developed for the synthesis of dihydropyrrolo‐[2,3‐b]quinolines from N‐(2‐cyclopropylidenemethylphenyl)phosphanimines and isocyanates.
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。