A new type of TfOH-catalyzed tandem cyclopropane ring enlargement/CâC formation/etherification reaction between alkynylcyclopropanes and 1,3-diketones to cyclobutane-fused dihydrofurans is described. The reaction tolerates a range of aryl and alkyl substituents with moderate to good yields.
报道了一种新型TfOH催化的串联
环丙烷扩环/C-C形成/醚化反应,涉及炔基
环丙烷与1,3-二酮生成
环丁烷并环二氢
呋喃。该反应对一系列芳基和烷基取代基具有良好的耐受性,产率中等至良好。