Diels–Alder reactions of perfluoroketene dithioacetals with electron-rich 1,3-dienes: a new access to polysubstituted aromatic sulfides
作者:Jean-Philippe Bouillon、Sergiy Mykhaylychenko、Sigismund Melissen、Agathe Martinez、Dominique Harakat、Yuriy G. Shermolovich
DOI:10.1016/j.tet.2012.07.054
日期:2012.10
The present paper describes the Diels–Alder reactions of perfluoroketene dithioacetals with electron-rich 1,3-dienes (2,3-dimethylbuta-1,3-diene, isoprene, penta-1,3-diene) followed by spontaneous HF and thiol elimination, leading to polysubstituted aromatic sulfides in moderate to good yields. Reactions seem to be dependent on the substitution patterns of perfluoroketene dithioacetals; the best results
本文描述了全氟乙烯二硫缩醛与富电子的1,3-二烯(2,3-二甲基丁-1,3-二烯,异戊二烯,五-1,3-二烯)的Diels-Alder反应,然后是自发的HF和硫醇消除,导致多取代的芳族硫化物以中等至良好的收率。反应似乎取决于全氟乙烯二硫缩醛的取代方式。从三氟甲基或五氟乙基和乙基硫烷基衍生物获得最佳结果。在DFT级进行的理论计算与实验结果非常吻合,表明整个过程由环加成步骤控制。