SEARCH Articles Figures Tables Bifunctional catalysts hydrogen-bond-donor asymmetric Bronsted difference from hydrogen bond catalyst Catalyst supported hydrogen-bonded Catalysts with boron—hydrogen bonds Catalysts with nitrogen—hydrogen bond Catalysts with phosphorus—hydrogen bond Catalysts with silicon—hydrogen bond Chiral Squaramides as Hydrogen-Bond Donor Catalysts Cinchona catalysts hydrogen-bonding activation Hydrogen Bond Catalysts Immobilization supported hydrogen bonded catalysts Palladium catalysts carbon-nitrogen bond hydrogenation Thiourea double hydrogen bonding catalysts