Visible light-mediated synthesis of quinazolines from 1,2-dihydroquinazoline 3-oxides
作者:Yi-Chou Chen、Ding-Yah Yang
DOI:10.1016/j.tet.2013.09.089
日期:2013.12
A series of quinazolines were synthesized in good to excellent yields by exposing 1,2-dihydroquinazoline3-oxides to visible light in acetonitrile without the presence of any external sensitizers. The only exception was the 2-(p-nitrophenyl)-substituted substrate, which is insensitive to visible light. This compound could be first oxidized to quinazoline 3-oxide via ruthenium-catalyzed visible light