Phenanthrenequinone-Sensitized Photocatalytic Synthesis of Polysubstituted Quinolines from 2-Vinylarylimines
作者:Juulia Talvitie、Iida Alanko、Evgeny Bulatov、Juho Koivula、Topias Pöllänen、Juho Helaja
DOI:10.1021/acs.orglett.1c03934
日期:2022.1.14
Visible-light-excited 9,10-phenanthrenequinone (PQ*) was used as a photocatalyst for the synthesis of polysubstituted quinolines via the electrocyclization of 2-vinylarylimines. Up to quantitative yields of 2,4-disubstituted quinolines were received after 1 h of excitation with blue LEDs at room temperature when MgCO3 was used as an additive in DCM. On the basis of experimental and DFT studies, we
可见光激发的 9,10-菲醌 (PQ*) 用作光催化剂,用于通过 2-乙烯基芳基亚胺的电环化合成多取代的喹啉。当 MgCO 3用作 DCM 中的添加剂时,在室温下用蓝色 LED 激发 1 小时后,可得到高达定量的 2,4-二取代喹啉。在实验和 DFT 研究的基础上,我们提出 PQ* 诱导亚胺底物的单电子氧化,从而触发电环化机制。