A one-pot two-step phosphorylation procedure is described which is suitable for the preparation of thermally lacible or highly substituted dialkyl phosphonates for use in Horner-Emmons olefinations. Such systems are not readily available using the traditional methods such as the Arbuzov reaction or acylation of dialkyl phosphonate carbanions. Reaction of dioxinone lithium enolates with diethyl chlorophosphite
                                    描述了一种一锅两步
磷酸化方法,该方法适合于制备用于霍纳-埃蒙斯(Horner-Emmons)烯烃化反应的可热交联或高度取代的二烷基
膦酸酯。使用传统方法,例如Arbuzov反应或
膦酸二烷基碳负离子的酰化反应,这种系统不易获得。二恶英烯醇酸
锂与
氯代
亚磷酸二乙酯反应,然后氧化,以良好或优异的收率和转化率提供所需的
膦酸酯。