Formation Mechanism of Furfuryl Sulfides from O-Furfuryl Dithiocarbonates: Density Functional Theory Study for Aromatic [3,3]-Sigmatropic Rearrangement
作者:Masashi Eto、Koki Yamaguchi、Yasuyuki Yoshitake、Kazunobu Harano
DOI:10.1248/cpb.59.681
日期:——
dithiocarbonate (1) undergoes aromatic [3,3]-sigmatropic rearrangement to the energetically unfavorable S-(2-methylene-2,3-dihydrofuran-3-yl) S-alkyl dithiocarbonate (2'), which then rearranges to furfuryl alkyl sulfide (3) with COS extrusion to regain the aromaticity lost in the first step.
在B3LYP / 6-31G(d)和B3LYP / 6-31G +(d)浓度下的密度泛函理论(DFT)计算表明,O-糠基S-烷基二硫代碳酸酯(1)经历了芳族的[3,3]-σ重排,能量上不利的S-(2-亚甲基-2,3-二氢呋喃-3-基)S-烷基二硫代碳酸酯(2'),然后通过COS挤出重排至糠基烷基硫化物(3),以恢复第一批中失去的芳香性步。