SEARCH Articles Figures Tables Ammonium salts as phase transfer catalysts Catalysts chiral ammonium salt phase Chiral Quaternary Ammonium Salts as Catalysts for the Strecker Reaction Maruoka-type ammonium salt catalysts Phase transfer catalysts ammonium salts Quarternary ammonium salts catalysts Quaternary ammonium salts as phase transfer catalysts Quaternary ammonium salts catalysts Quaternary ammonium salts phase-transfer catalysts