A method to prepare functionalized 2,3-dihydrofurans by Sc(OTf)3-catalyzed cyclization of α-allylated 1,3-dicarbonyl compounds is reported. The reactions were shown to be operationally simplistic and proceed efficiently for a variety of substrates, leading to the formation of 2,2-disubstituted 2,3-dihydrofurans in good to excellent yields.
报道了一种通过Sc(OTf)3催化α-烯丙基化的1,3-二羰基化合物的环化反应制备官能化的2,3-二氢
呋喃的方法。对于各种底物,反应显示操作简单且有效进行,从而导致以良好至优异的产率形成2,2-二取代的2,3-二氢
呋喃。