An unprecedented annulation reaction is developed for the synthesis of dihydrofuran-fused compounds. In this Ru-catalyzed hydroxyl-group-directed reaction, easily affordable sulfoxonium ylides and 1,4-dioxane were used as the annulating partners. This is the first example of the use of 1,4-dioxane as a methylene source to construct a heterocyclic scaffold. A wide range of dihydrofuran0fused coumarins
为合成二氢
呋喃稠合化合物开发了前所未有的环化反应。在这种 Ru 催化的羟基导向反应中,使用容易负担得起的氧化
硫叶立德和
1,4-二氧六环作为环化伙伴。这是使用 1,4-
二恶烷作为亚甲基源构建杂环支架的第一个例子。使用这种三组分反应合成了多种二氢
呋喃稠合
香豆素和
萘。