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SYNTHESE DE β-ETHOXYCARBONYL γ-LACTONES
Gaudemar-Bardone, F.,Mladenova, M.,Couffignal, R.
, p. 1047 - 1048 (1984)
β-ethoxycarbonyl β, γ-insaturated γ-lactones 2 are easily prepared by dehydration of β-acyl β-ethoxycarbonyl α-alkyl propionic acids.Otherwise the condensation of these acids with allylzinc reagents produces β-ethoxycarbonyl γ-lactones 3 with a β-ethyleni
