作者:Viacheslav A. Petrov、Will Marshall
DOI:10.1016/j.jfluchem.2011.03.024
日期:2011.10
Hexafluorothioacetone, generated in situ from its cyclic dimer (1) in the presence of CsF catalyst was shown to react with styrene or 4-alkyl-styrenes (alkyl = c-hexyl, Me, t-Bu) forming the corresponding 2:1 Diels–Alder cycloadducts as major products. All cycloadducts were isolated, and the structure of two of them was established by single crystal X-ray diffraction. While 2-vinylnaphthalene, 4-CF3-
已证明在CsF催化剂存在下由其环状二聚体(1)原位生成的六氟硫代丙酮与苯乙烯或4-烷基-苯乙烯(烷基= c-己基,Me,t-Bu)反应形成相应的2:1 Diels –Al木环加成物为主要产品。分离所有环加合物,并通过单晶X射线衍射确定其中两个的结构。当2-乙烯基萘,4-CF 3-和4-Cl-苯乙烯在CsF催化剂存在下与1反应生成相应的1:1 Diels-Alder环加合物时,发现4-烷氧基苯乙烯优先生成相应的硫杂环丁烷。苯乙烯与1的反应 也被发现对氟离子源和溶剂敏感。