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-and 4-Cl-styrenes in the presence of CsF catalyst react ...
