Graphene-Oxide-Catalyzed Direct CH−CH-Type Cross-Coupling: The Intrinsic Catalytic Activities of Zigzag Edges
作者:Hongru Wu、Chenliang Su、Rika Tandiana、Cuibo Liu、Chuntian Qiu、Yang Bao、Ji'en Wu、Yangsen Xu、Jiong Lu、Dianyuan Fan、Kian Ping Loh
DOI:10.1002/anie.201802548
日期:2018.8.20
graphene oxide (GO)‐based materials for C−C cross‐coupling represents a significant advance in carbocatalysis. Although GO has been used widely in various catalytic reactions, the scope of reactions reported is quite narrow, and the relationships between the type of functional groups present and the specific activity of the GO are not well understood. Herein, we explore CH−CH‐type cross‐coupling of xanthenes
用于C-C交叉偶联的基于氧化石墨烯(GO)的材料的开发代表了碳催化方面的重大进步。尽管GO已被广泛用于各种催化反应中,但是所报道的反应范围非常狭窄,并且对存在的官能团的类型与GO的比活性之间的关系还没有很好的理解。在本文中,我们探索了使用GO作为真正的碳催化剂而不是化学计量的反应物,将黄嘌呤与芳烃进行CH-CH型交叉偶联。进行了涉及分子类似物以及被捕集的中间体的机理研究,以探测活性位点,这些活性位点可以追溯到醌型官能团以及GO材料中的之字形边缘。GO催化的交叉脱氢偶联操作操作简单,显示了多个循环的可重复使用性,