SEARCH Articles Figures Tables Asymmetric epoxidation catalyzed by novel azacrown ether-type chiral quaternary ammonium salts under phase-transfer catalytic conditions Asymmetric epoxidation phase-transfer catalysis Asymmetric epoxidation under phase-transfer catalytic Chalcone phase-transfer-catalyzed epoxidation Enone epoxidation, phase transfer catalyst Epoxidation phase-transfer catalysis Epoxidation phase-transfer-catalysed Epoxidation using phase-transfer catalysis Epoxides asymmetric phase-transfer Gas-Phase Propylene Epoxidation Liquid-phase epoxidation Phase separation epoxidized triglyceride oils Phase transfer epoxidation Propylene epoxidation liquid-phase Reaction-controlled phase-transfer catalysis for propylene epoxidation