 Other interests in Denmark's group include nitroalkene related cycloaddition reactions, phosphorus-stabilized anions, aldol chemistry, asymmetric allylmetal chemistry, silicon-based cross-coupling reactions, phase-transfer catalysis, water-gas shift reaction, and organocatalysis.His work on the palladium-catalyzed cross-coupling reaction with vinylsilanol and arylrsilanol has been recognized as the Hiyama-Denmark coupling.Significant interests of Denmark's also include asymmetric catalysis with main group elements, also known as Lewis base catalysis, which is a subclass of organocatalysis.