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自1958年年Horner等发现膦酸酯碳负离子能取代Wittig试剂与羰基化合物反应制备烯烃以来,该类反应作为一种新的合成方法得到广泛的研究。由于膦酸酯碳负离子的亲核性
Since Horner et al. Found that phosphonate carbon anions can replace the Wittig reagent and carbonyl compounds to produce olefins in 1958, such reactions have been extensively studied as a new synthesis method. Due to the nucleophilicity of the phosphonate carbanion