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- W2347363644 abstract "A new chiral quaternary ammonium salt 1a was synthesized by the reaction of cinchonine and(2,4,6-)trimethyl benzyl chloride.Etherification between 1a and benzyl bromide,allyl chloride,or methyl(iodide) give corresponding etherified quaternary ammonium salts 1b,1c,and 1d.In the presence of 1b,1c,or 1d(5%,molar fraction),chalcone was stereoselectively epoxidized by sodium hypochlorite with yields range from 89% to 92% and ee range from 58% to 63%." @default.
- W2347363644 created "2016-06-24" @default.
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- W2347363644 date "2006-01-01" @default.
- W2347363644 modified "2023-09-25" @default.
- W2347363644 title "Synthesis and Application in Enantioselective Epoxidation of Chalcone of Chiral Quaternary Ammonium Salts Based on Cinchonine" @default.
- W2347363644 hasPublicationYear "2006" @default.
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