Synthesis of [1,2,3]Triazolo[1,5-<i>a</i>]quinoxalin-4(5<i>H</i>)-ones through Copper-Catalyzed Tandem Reactions of <i>N</i>-(2-Haloaryl)propiolamides with Sodium Azide
作者:Jiajie Yan、Fengtao Zhou、Dongguang Qin、Tong Cai、Ke Ding、Qian Cai
DOI:10.1021/ol300114w
日期:2012.3.2
A simple and efficient approach for the synthesis of [1,2,3]triazolo[1,5-a]quinoxalin-4(5H)-ones is described. The methodology is based on a tandem reaction of 1-(2-haloaryl)propiolamides with sodium azide through a [3 + 2] azide–alkyne cycloaddition and intramolecular Ullmann-type C–N coupling process.
描述了一种简单有效的合成[1,2,3]三唑并[1,5 - a ]喹喔啉-4(5 H)-的方法。该方法基于1-(2-卤代芳基)丙酰胺与叠氮化钠通过[3 + 2]叠氮化物-炔烃环加成反应以及分子内Ullmann型C-N偶联过程的串联反应。
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-catalyzedtandemreaction 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。