A new synthetic method of 2-(1-phosphorylalkyl)furans with a variety of substituents on the ring is presented. Cycloaddition of (diethoxyphosphoryl)acetonitrile oxide to O-protected allyl alcohols is followed by a simple sequential procedure including Raney Ni reduction and acid treatment to give 2-(1-phosphorylmethyl)furans. The phosphorus-stabilized carbanions derived from the phosphorus-functionalized furans are applied to alkylation, oxidation with oxygen, or olefination to provide 2-(1-phosphorylalkyl)furans, 2-acylfurans, or 2-(1-alkenyl)furans, respectively. Some other synthetic applications are also described.
提出了一种在
呋喃环上带有各种取代基的2-(1-
磷酰基烷基)
呋喃的新合成方法。将(二乙氧基
磷酰基)
乙腈氧化物与O-保护的烯丙基醇进行环加成反应,随后通过包括Raney Ni还原和酸处理的简单顺序步骤,得到2-(1-
磷酰基甲基)
呋喃。由
磷功能化
呋喃衍生的
磷稳定碳负离子应用于烷基化、氧氧化或烯化反应,分别得到2-(1-
磷酰基烷基)
呋喃、2-酰基
呋喃或2-(1-烯基)
呋喃。还描述了其他一些合成应用。