1540-07-4Relevant academic research and scientific papers
Reaction of fluoroolefins with sulfur chlorides in hydrogen fluoride-boron trifluoride system
Petrov, Viacheslav A.
, p. 325 - 327 (2001)
The reaction of tetrafluoroethylene (1), perfluorovinyl ether (3), hexafluoropropene (5), and 2-H-pentafluoropropene (7) with sulfur chlorides in anhydrous HF/BF3 system has been studied. The reaction with S2Cl2 at 40-100°C produces a mixture of the corresponding di- and trisulfides along with smaller amounts of sulfenyl- and thiosulfenyl chlorides. In case of 7 the use of BF3 catalyst results higher yields and selectivity of the process under milder conditions. The reaction of 5 and SCl2 in HF/BF3 at 100°C is selective, gives (CF3)2CFSCl, isolated in 65% yield.
New Syntheses of Trifluoromethyl-Substituted Heterocycles
Rabe, Gerd,Sundermeyer, Joerg,Roesky, Herbert W.,Schmidt, Hans-Georg,Noltemeyer, Mathias
, p. 691 - 696 (2007/10/02)
Dimeric hexafluorothioacetone (HFTA) (1) reacts with thiourea or phenylthiourea to give 1,2,4-dithiazolines 2a and 2b.Similarly, 1,2,4-thiaselenazoline 3 is obtained from the reaction of 1 with selenourea.Reaction of 1 with oxamic hydrazide or thiosemicarbazide leads to acyclic molecules 4 and 5.Besides 5, the cyclic isomer 6 is also observed in solution.The N-trifluoroacetyl derivative 6a is obtained from the reaction of 5 with trifluoroacetic anhydride.The structures of 2b, 3, 5 and 6a have been determined by single-crystal X-ray crystallography.
