A selenium radical triggered switchable ortho/ipso-cyclization cascade of N-aryl alkynamides has been devised under metal-free conditions to access 3-selenyl quinolin-2-ones and 3-selenospiro[4,5]trienones in high yields (up to 98%).
一种基于硒自由基引发的金属无催化条件下的N-芳基炔酰胺的可切换ortho/ipso环化级联反应被设计出来,以高收率(最高达98%)制备3-硒基喹啉-2-酮和3-硒代螺[4,5]三烯酮。