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- W2951799293 abstract "Reaction of nitrones and acyl halides gives N-acyloxyiminium species, which are more reactive toward soft carbon nucleophiles than nitrones. Addition of chiral enolates to the N-acyloxyiminium species gave N-hydroxy-β-amino acid derivatives highly diastereoselectively. Reversal of diastereoselectivity was observed between the boron enolates and titanium enolates. Using this method all of the four stereoisomers of α-methyl-β-phenylalanines can be prepared as enantiomerically pure forms." @default.
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- W2951799293 date "2010-06-12" @default.
- W2951799293 modified "2023-09-24" @default.
- W2951799293 title "ChemInform Abstract: Reversal of Diastereoselectivity of the Reaction of Chiral Boron and Titanium Enolates with Nitrones via N-Acyloxyiminium Intermediates. Asymmetric Synthesis of Diastereomeric α-Substituted β-Amino Acids." @default.
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- W2951799293 doi "https://doi.org/10.1002/chin.200001204" @default.
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