Synthesis of hydroxyl-containing oxindoles and 3,4-dihydroquinolin-2-ones through oxone-mediated cascade arylhydroxylation of activated alkenes

The first oxone-mediated cascade arylhydroxylation of activated alkenes for the synthesis of valuable hydroxyl-containing oxindoles and 3,4-dihydroquinolin-2-ones under additional additive- and catalyst-free conditions was developed.