Regioselectively substituted diethyl 3-furylphosphonates have been prepared in good yields (55-90%) under very mild conditions by a simple two-step procedure based on ceric ammonium nitrate-promoted oxidative addition of β-ketophosphonates to vinylic acetates followed by acid catalyzed Pall-Knorr cyclization reactions.
区域选择性取代的 3-
呋喃基
膦酸二乙酯在非常温和的条件下通过简单的两步程序以良好的收率(55-90%)制备,基于
硝酸高
铈铵促进β-酮
膦酸酯氧化加成到
乙酸乙烯酯,然后酸催化 Pall -克诺尔环化反应。