SEARCH Articles Figures Tables Asymmetric catalytic Asymmetric epoxidation Asymmetric epoxidation catalyzed by novel azacrown ether-type chiral quaternary ammonium salts under phase-transfer catalytic conditions Asymmetric phase-transfer Asymmetric transfer Catalytic asymmetric epoxidation Catalytic asymmetric phase-transfer Catalytic phase Epoxidation catalytic Epoxidations, asymmetric Epoxidations, catalytic Epoxidations, catalytic asymmetric Epoxides asymmetric epoxidation Epoxides asymmetric phase-transfer Phase epoxidation