Enol ethers, β-dicarbonyl compounds and the Mn(III) reagent Mn3O(OAc)7 react under mild conditions to form 1-alkoxy-1.2-dihydrofurans in good (70–98%) yields. The latter are readily converted to furans by acid-catalyzed elimination of ROH.
Enol醚、β-二羰基化合物和Mn(III)试剂Mn3O(OAc)7在温和条件下反应,以良好的产率(70–98%)生成1-烷氧基-1,2-二氢
呋喃。后者通过酸催化消除ROH,容易转化为
呋喃。