A method is described for the preparation of β-hydroxy-α-phosphonato-esters via the corresponding β-keto-esters. Deprotonation of these alcohols yielded the accepted intermediate in the Wadsworth–Emmons reaction, which generates αβ-unsaturated ester by direct and indirect routes.
G. Durrant and J. K. Sutherland, J. Chem. Soc., Perkin Trans. 1, 1972, 2582 DOI: 10.1039/P19720002582
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