Copper-Catalyzed N- and O-arylation of amides: Alternative approaches to 3,4-dihydroquinolin-2-ones, quinolin-2-ones, and 12h-chromeno[2,3-b]quinolin-12- ones
The efficient syntheses of 3-cyanoquinolin-2-ones, 3-(2-bromobenzyl)-3- cyano-3,4-dihydroquinolin-2-ones, 3-(2-bromobenzyl)quinolin-2-ones, and 12H-chromeno[2,3-b]quinolin-12-ones through copper-catalyzed N- and O-arylation of amides by using readily avai