A mild and efficient strategy for the construction of persubstituted bis-tetrahydrofuran and perhydrofuro[2,3-b]pyran derivatives has been developed. Persubstituted cyclization products were obtained in good to excellent yields. The [3 + 2] cycloaddition of 1,2-cyclopropanated sugars with aldehydes in the presence of InCl3 is highly diastereoselective.
已经开发了一种温和有效的策略来构建全取代的双-
四氢呋喃和全氢
呋喃[2,3- b ]
吡喃衍
生物。以良好至优异的产率获得全取代的环化产物。在InCl 3的存在下,1,2-
环丙烷化糖与醛的[3 + 2]环加成反应具有非对映选择性。