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.
一种制备具有高E/Z-和β,γ/α,β比率的β,γ-不饱和-γ,γ-二取代酯1的方法,通过在约130至170摄氏度的温度下,将共轭马隆酸酯式(3)与I、II或III族
金属卤化物或有机阳离子/卤离子对、无机质子源和极性溶剂反应,得到
化学式(1)。