main products. When the reactions were carried out in the presence of a catalytic amount of copper(I) iodide, normal coupling occurred and 3-substituted furans, perillene and dendrolasin, were formed in good yields. The related naturally occurring 3-substituted thiophene, 3-(4-methyl-3-pentenyl)thiophene, was also synthesized from 3-thienylmethylmagnesium bromide and prenyl diethy phosphate.
3-
呋喃基
甲基溴化镁与
异戊二烯和香叶基
磷酸二乙酯的偶联反应得到2-取代的
3-甲基呋喃、蔷薇
呋喃和倍半
硅氧烷,作为主要产物。当反应在催化量的
碘化
铜 (I) 存在下进行时,会发生正常偶联,并以良好的产率形成 3-取代
呋喃、紫
紫苏烯和树皮苷。相关的天然存在的 3-取代
噻吩,3-(4-甲基-3-
戊烯基)
噻吩,也由 3-
噻吩基
甲基溴化镁和
异戊二烯二
乙基磷酸盐合成。