| abstract |
A process for the preparation of β,γ-unsaturated-γ,γ-disubstituted esters 1 with high E/Z - and β,γ/α,β-ratios, Formula (1) by reacting at a temperature of between about 130 and 170 degrees centigrade the conjugated malonate Formula (3) with, a group I, II or III metal halide or an organic cation/halide anion pair, an inorganic proton source and a polar solvent. |