Synthesis of furan substituted dihydrofuran compounds by radical cyclization reactions mediated by manganese(III) acetate
作者:Mehmet Yılmaz、Emre Biçer、Aslı Ustalar、A. Tarık Pekel
DOI:10.3998/ark.5550190.p008.482
日期:——
In this study, novel furan substituted dihydrofuran compounds were synthesized by the radical addition of 1,3-dicarbonyl compounds to 1,1and 1,2-disubstituted alkenes using manganese(III) acetate in HOAc. It is observed that 1,1-disubstituted alkenes gave better yields whereas 1,2disubstituted alkenes gave moderate yields. Besides, 1,2-disubstituted alkenes gave us cisisomers whereas trifluoromethylated
在这项研究中,通过使用乙酸锰 (III) 在 HOAc 中将 1,3-二羰基化合物自由基加成到 1,1 和 1,2-二取代烯烃,合成了新型呋喃取代的二氢呋喃化合物。据观察,1,1-二取代烯烃的产率更高,而1,2-二取代的烯烃产率适中。此外,1,2-二取代烯烃为我们提供顺式异构体,而具有 1,2-二取代烯烃的三氟甲基化 1,3-二羰基化合物为我们提供了通过 NOSY 光谱确定的二氢呋喃的反式异构体。