Synthesis of 2-(1-Phosphorylalkyl)- and 2-(1-Alkenyl)furans through Nitrile Oxide Cycloaddition Route
作者:Otohiko Tsuge、Shuji Kanemasa、Hiroyuki Suga
DOI:10.1246/bcsj.61.2133
日期:1988.6
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。