A novel palladium catalyzed homodimerization of ortho-hydroxyphenylsubstituted p-QMs has been developed via [4+2] cycloaddition/oxidative dehydrogenation coupling domino reactions. An interesting palladium catalyzed the intramolecular benzyl C-H oxidation dehydrogenation to form...

Highly selective divergent oxidative dearomatization coupling reactions, in which the chemoselectivity is controlled by catalysts and bases, are reported herein. Three different kinds of polycyclic cyclohexadienones are produced from the...