Abstract
An easy approach for the synthesis of various 5-substituted-3-(prop-2-ynyl)dihydrofuran-2(3H)-ones is described. As a method of choice, Mannich aminomethylation of terminal alkynes is adopted. The reaction works well with acyclic and cyclic secondary amines and provides the desired products, with good to very good yields.
摘要:描述了一种合成各种5-取代-3-(丙-2-炔基)二氢呋喃-2(3H)-酮的简便方法。 作为首选方法,采用了末端炔烃的Mannich胺甲基化。 该反应适用于无环和环状二级胺,并以良好至非常好的产率提供所需的产物。