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- W2046148199 abstract "Liquid–liquid phase asymmetric Darzens condensations were carried out in the presence of d-glucose- and d-mannose-based crown ethers 1 and 2 as the catalyst. The use of d-glucose-based lariat ether 1 as the catalyst gave the best results. The reaction of 4-phenyl-α-chloroacetophenone, 2-chloro-1-tetralone, and 2-chloro-1-indanone with various aromatic aldehydes afforded the corresponding aromatic α,β-epoxyketones in moderate to high enantiomeric excess (ee up to 96%) under mild reaction conditions. The substituents of the benzaldehyde used as the reactants had a significant impact on the chemical yields and enantiomeric excess. The absolute configuration of some epoxyketone products was determined by single-crystal X-ray analysis." @default.
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- W2046148199 date "2012-04-01" @default.
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- W2046148199 title "Asymmetric phase transfer Darzens reactions catalyzed by d-glucose- and d-mannose-based chiral crown ethers" @default.
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- W2046148199 doi "https://doi.org/10.1016/j.tetasy.2012.04.006" @default.
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