Nickel-Catalyzed Direct Synthesis of Quinoxalines from 2-Nitroanilines and Vicinal Diols: Identifying Nature of the Active Catalyst
作者:Sujan Shee、Dibyajyoti Panja、Sabuj Kundu
DOI:10.1021/acs.joc.9b03104
日期:2020.2.21
The inexpensive and simple NiBr2/1,10-phenanthroline system-catalyzed synthesis of a series of quinoxalines from both 2-nitroanilines and 1,2-diamines is demonstrated. The reusability test for this system was performed up to the seventh cycle, which afforded good yields of the desired product without losing its reactivity significantly. Notably, during the catalytic reaction, the formation of the heterogeneous
证明了廉价且简单的NiBr2 / 1,10-菲咯啉系统催化的由2-硝基苯胺和1,2-二胺合成一系列喹喔啉的方法。对该系统的可重复使用性测试一直进行到第七个周期,这提供了所需产物的良好收率,而不会显着降低其反应性。值得注意的是,在催化反应期间,观察到异质Ni颗粒的形成,其特征在于PXRD,XPS和TEM技术。