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A number of chiral quaternary ammonium salts were synthesized from (1 R,2S)-(-)-1,2-diphenyl-2-aminoethanol and applied to the enantioselective alkylation
A number of chiral quaternary ammonium salts were synthesized from (1 R, 2S) - (-) - 1,2-diphenyl-2-aminoethanol and applied to the enantioselective alkylation