Visible Light-Driven Flexible Synthesis of α-Alkylated Glycine Derivatives Catalyzed by Reusable Covalent Organic Frameworks
作者:Yao Tian、Xiubin Bu、Luohe Wang、Junnan E、Liangliang Shi、Hua Tian、Xiaobo Yang、Hua Fu、Zhen Zhao
DOI:10.1021/acs.joc.3c02343
日期:2024.2.2
Herein, we report a heterogeneous visible light-driven preparation of α-alkylated glycine derivatives. This approach employed a β-ketoenamine-linked covalent organic framework (2D-COF-4) as the heterogeneous photocatalyst and N-hydroxy phthalimide (NHPI) esters as the alkyl radical sources. Numerous glycine derivatives, including dipeptides, were precisely and efficiently alkylated under visible light-driven
在此,我们报告了一种异质可见光驱动的α-烷基化甘氨酸衍生物的制备方法。该方法采用β-酮烯胺连接的共价有机骨架(2D-COF-4)作为非均相光催化剂,使用N-羟基邻苯二甲酰亚胺(NHPI)酯作为烷基自由基源。许多甘氨酸衍生物,包括二肽,在可见光驱动的反应条件下被精确有效地烷基化。基于2D-COF-4优异的光活性和有机反应相容性,该烷基化反应可以在绿色溶剂(乙醇)中灵活进行,无需任何其他添加剂。通过简单的后处理程序,光催化剂和邻苯二甲酰亚胺得到了有效的回收,显示出高生态价值和低环境因子(E-因子)。