Trimethylsilyl enol ethers bearing trialkylsilyl-protected hydroxy groups were converted into synthetically valuable bifunctional alkenyl nonaflates under the action of nonafluorobutane-1-sulfonyl fluoride combined with potassium fluoride in the presence of catalytic amounts of dibenzo-18-crown-6. The methodology has been demonstrated for structurally diverse substrates possessing various trialkylsilyl-protected hydroxy groups which remained intact during the reaction course.
具有三烷基
硅烷保护的羟基的三甲基
硅基烯醇醚,在二苯并-
18-冠-6的催化量存在下,通过非
氟硼酸丁烷-1-磺酰
氟与
氟化
钾的共同作用,被转化为合成中有价值的含双功能烯丙基的
壬酸酯。该方法已证明适用于结构多样的底物,这些底物具有各种三烷基
硅烷保护的羟基,在反应过程中保持完整。