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。
The synthesis of 3-methyleneindol-2(3H )-ones related to mitomycins via 5-exo-dig aryl radical cyclisation
作者:Shirley A. Brunton、Keith Jones
DOI:10.1039/a907920c
日期:——
The synthesis of acetylenic amides from 2-bromoaniline and propiolic acids followed by their cyclisation via the derived aryl radical is presented. Silylation of the terminal end of the triple bond is shown to be required for successful cyclisation to 3-methyleneindol-2(3H)-ones. The exocyclic double bond can be epoxidised using m-chloroperoxybenzoic acid (MCPBA).