Iron(III) Chloride/Diorganyl Diselenides-Promoted Regioselective Cyclization of Alkynyl Aryl Ketones: Synthesis of 3-Organoselenyl Chromenones under Ambient Atmosphere
作者:Benhur Godoi、Adriane Sperança、Cesar A. Bruning、Davi F. Back、Paulo Henrique Menezes、Cristina W. Nogueira、Gilson Zeni
DOI:10.1002/adsc.201100189
日期:2011.8
benign synthesis of 3-organoselenylchromenones was accomplished via iron(III) chloride/diorganyldiselenides-promoted intramolecular 6-endo-dig cyclization of alkynylarylketone derivatives. The cyclization reactions proceeded cleanly under mild reaction conditions, and the desired chromenone derivatives were smoothly isolated in good yields. The methodology proved to be highly regioselective, giving
Ag(<scp>i</scp>)-catalyzed three-component radical cascade synthesis of 3-organoselenyl chromones from 2-methoxyaryl alkynones, Se powder and organic boronic acids
作者:Nan Sun、Zengguo Qiao、Xiaolong Liu、Zhi Qiao、Liqun Jin、Xinquan Hu
DOI:10.1039/d3nj04463g
日期:——
Herein, we present a new Ag(I)-catalyzed three-component radical cascade reaction for the construction of 3-organoselenyl chromones from 2-methoxyaryl alkynones, Se powder and organic boronic acids. With 20 mol% of AgNO3 as a catalyst, 10 mol% of SDS as an additive and under an O2 atmosphere in 1,4-dioxane, a wide range of multi-functionalized 3-organoselenyl chromones have been achieved in good to
在此,我们提出了一种新的Ag( I )催化的三组分自由基级联反应,用于从2-甲氧基芳基炔酮、硒粉和有机硼酸构建3-有机硒基色酮。以20 mol%的AgNO 3作为催化剂,10 mol%的SDS作为添加剂,在O 2气氛下的1,4-二恶烷中,获得了多种从良好到优异的多功能化3-有机硒基色酮。产量。该方案具有起始原料易得、操作简单、步骤经济性高、产品结构多样性高等特点。