The Wittig rearrangement of 3-furylmethyl ethers 1, proceeds efficiently to give 3-methyl-2-furylmethanols 2 or 3-furylethanols 3 depending on the basicity of the butyllithium used; synthesis of dendrolasin is achieved with the 1,2-rearrangement of 3-furylmethyl geranyl ether 5 as a key step.
3-
呋喃基甲基醚 1 的维蒂希重排有效地进行,得到 3-甲基-2-
呋喃基
甲醇 2 或 3-
呋喃基
乙醇 3,具体取决于所用丁基
锂的碱性;树松素的合成以3-
呋喃基甲基香叶基醚5的1,2-重排为关键步骤。