Organocatalytic Triazole Formation, Followed by Oxidative Aromatization: Regioselective Metal-Free Synthesis of Benzotriazoles
作者:Dhevalapally B. Ramachary、Adluri B. Shashank
DOI:10.1002/chem.201301412
日期:2013.9.23
we report on our studies on the sequential one‐pot combinations of amine‐catalyzed multicomponent reactions (MCRs). We have developed the copper‐free synthesis of functionalized bicyclic N‐aryl‐1,2,3‐triazole and N‐arylbenzotriazole products 4 and 5 from the simple unmodified starting materials through [3+2]‐cycloaddition ([3+2]‐CA) and oxidative aromatization reactions in one pot under amine catalysis
在本文中,我们报告了有关胺催化的多组分反应(MCR)的顺序一锅法组合的研究。我们已经开发的无铜合成官能化的双环N-芳基-1,2,3-三唑和Ñ -arylbenzotriazole产品4和5通过从简单未修饰的起始原料[3 + 2] -环([3 + 2] ‐CA)和一锅在胺催化下的氧化芳构化反应。通过将吡咯烷用作烯酮,芳基叠氮化物和2,3-二氯-5,6-二氰基-1,4-苯并醌(DDQ)的简单未改性底物的催化剂,顺序单锅反应以高收率和高选择性进行)。此外,我们还演示了产品4的医学应用和5通过简单的有机反应。