Froidbise, A.

Krief, A.

Provins, L.

2-Metallo-2-sulfonylpropanes and 2-metallo-2-nitropropanes react with the dimethyl alkylidenemalonate derived from the acetonide of D- glyceraldehyde to produce the Michael adduct or the corresponding dimethyl cyclopropane-1,1-dicarboxylate. The nature of the product formed and the relative configuration of the cyclopropane derivative depends upon the nature of the leaving group and the conditions used (solvent and counter ion)

Asymmetric synthesis of cyclopropane-1,1-dicarboxylates from a -γ- Alkoxy-alkylidenemalonate

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