V. G. Chilikin

Organic compounds containing a pentafluorothio group

The addition of sulfur chloride pentafluoride to various terminal olefins, including those containing functional substituents, was studied. Possible side processes in these reactions are oligomerization and fluorination of the starting olefin.

Synthesis and properties of 2-nitrosopolyfluoroalkyl fluorosulfates

Conclusions1.Addition of nitrosyl fluorosulfate to the multiple bond of fluoroolefins was accomplished, and the previously unknown 2-nitrosopolyfluoroalkyl fluorosulfates were obtained.2.It was shown that 2-nitrosopolyfluoroalkyl fluorosulfates are effective dienophiles, and in reaction with fluoroolefins at 20–50‡C they form the corresponding oxazetidines and nitrosofluoropolymers.

Reactivity of bromine tris(fluorosulfate)

Conclusions1.In reactions of bromine tris (fluorosulfate) with fluoroolefins the corresponding 2-bromofluoroalkyl fluorosulfates and vicinal bis (fluorosulfonyloxy) fluoroalkanes, products of addition to the multiple bond of elements of bromine monofluorosulfate and peroxydisulfuryl difluoride, respectively, are formed.2.Bromine tris (fluorosulfate) substitutes H and Cl atoms for the fluorosulfate groups in freons.

Reaction of chlorine fluorosulfate and peroxydisulfuryl difluoride with perfluoronitrosoalkanes

ConclusionsThe replacement of the nitroso group in perfluoronitrosoalkanes in the presence of chlorine fluorosulfate and peroxydisulfuryl difluoride was studied. A hypothesis concerning the possible reaction mechanism was stated.

Reaction of nitronium fluosulfate with fluoroolefins

ConclusionsWe were the first to add nitronium fluosulfate to the multiple bond of fluoroolefins to give the corresponding fluorinated β-nitroalkyl fluosulfates. The theory was expressed that the electrophilic mechanism applies to the given process.