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A simple quantitative chiral analysis of amino acid esters by fluorine-19 nuclear magnetic resonance using the modified James–Bull method

Chirality (2019) 31(1) 34-40
DOI: 10.1002/chir.23028
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Abstract

A simple chiral analysis of amino acid esters by fluorine-19 nuclear magnetic resonance ( 19 F NMR) through the modified James–Bull method is described. Thus, amino acid ester acid salt was treated with 5-fluoro-2-formylphenylboronic acid and (S)-BINOL in the presence of triethylamine (TEA) and MS4A for 10 minutes. The reaction mixture was analysed by 19 F NMR directly to afford good quantifications.

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Hamaguchi, N., Okuno, Y., Oe, Y., & Ohta, T. (2019). A simple quantitative chiral analysis of amino acid esters by fluorine-19 nuclear magnetic resonance using the modified James–Bull method. Chirality, 31(1), 34–40. https://doi.org/10.1002/chir.23028

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