The syntheses of quinoxalines derived from 1,2-diamine and 1,2-dicarbonyl compounds under mild reaction conditions was carried out using a nanoparticle-supported cobalt catalyst. The supported nanocatalyst exhibited excellent activity and stability and it could be reused for at least ten times without any loss of activity. No cobalt contamination could be detected in the products by AAS measurements, pointing to the excellent activity and stability of the Co nanomaterial.
在温和反应条件下,利用纳米颗粒支持的
钴催化剂合成了源自1,2-二胺和1,2-二酮化合物的
喹喔啉。该支持纳米催化剂表现出了优异的活性和稳定性,且可重复使用至少十次而没有活性损失。通过原子吸收光谱(
AAS)测量未检测到产品中的
钴污染,显示出
钴纳米材料的优良活性和稳定性。