Palladium-Catalyzed Tandem Reactions of β-(2-Bromophenyl)-α,β-Unsaturated Carbonyl Compounds with 2-Hydroxyphenylboronic Acid: A New Route to Benzo[c]chromenes

Palladium-catalyzed tandem reactions of beta-(2-bromophenyl)-a,beta-unsaturated carbonyl compounds with 2-hydroxyphenylboronic acid for the synthesis of benzo[c]chromenes are presented. This mild reaction allows formation of onecarboncarbon bond and one carbonoxygen bond in one pot.