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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Enantioselective alkylation of beta-keto esters by phase-transfer catalysis using chiral quaternary ammonium salts.

Catalytic enantioselective alkylation promoted by a quaternary ammonium salt from cinchonine as a phase transfer catalyst is described. Treatment of cyclo beta-keto esters with alkyl halide under mild reaction conditions afforded the corresponding alpha-alkylated beta-keto esters in moderate to excellent yields with high enantiomeric excesses[1]

References

  1. Enantioselective alkylation of beta-keto esters by phase-transfer catalysis using chiral quaternary ammonium salts. Park, E.J., Kim, M.H., Kim, D.Y. J. Org. Chem. (2004) [Pubmed]
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