Copper-Catalyzed Tandem Reaction of Isocyanides with <i>N</i>-(2-Haloaryl)propiolamides for the Synthesis of Pyrrolo[3,2-<i>c</i>]quinolin-4-ones
作者:Fengtao Zhou、Jianguang Liu、Ke Ding、Jinsong Liu、Qian Cai
DOI:10.1021/jo2006939
日期:2011.7.1
The copper-catalyzed tandem reaction of isocyanides with N-(2-haloaryl)propiolamides is very efficient for the synthesis of pyrrolo[3, 2-c]quinolin-4-ones. Highly reactive cyclic organocopper intermediates were proposed to be generated in the copper-catalyzed formal [3 + 2] cycloaddition reaction of isocyanides with triple bonds. Intramolecular trapping of the organocopper intermediates can lead to
铜催化的异氰酸酯与N-(2-卤代芳基)丙酰胺的串联反应对于合成吡咯并[3,2 - c ]喹啉-4-酮非常有效。有人提出,在具有三键的异氰酸酯的铜催化形式[3 + 2]环加成反应中会生成高反应性的环状有机铜中间体。分子内捕获有机铜中间体会导致芳基碳键的形成,这为构建稠合吡咯结构提供了一种有效的方法。