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Issue 9, 1994
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Asymmetric synthesis of syn-α-alkyl-β-amino acids


An investigation into the reactivity of the highly stereoselective conjugate nucleophile lithium N-benzyl-N-α-methylbenzylamide 1 with α-alkyl-α,β-unsaturated esters has led to the development of a versatile asymmetric synthesis of syn-α-alkyl-β-amino acids. By performing the conjugate additions in toluene and diluting the reaction mixtures with THF prior to quenching of the reactions with the hindered acid, 2,6-di-tert-butylphenol 13, the product syn-α-alkyl-β-amino esters may be generated in good yield and with excellent stereocontrol. Several examples illustrate the ease with which these products may be debenzylated and hydrolysed to afford homochiral syn-α-alkyl-β-amino acids.

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Article type: Paper
DOI: 10.1039/P19940001141
Citation: J. Chem. Soc., Perkin Trans. 1, 1994,0, 1141-1147
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    Asymmetric synthesis of syn-α-alkyl-β-amino acids

    S. G. Davies, O. Ichihara and I. A. S. Walters, J. Chem. Soc., Perkin Trans. 1, 1994, 0, 1141
    DOI: 10.1039/P19940001141

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