Fluoroaliphatic hydroxyketoradicals prepared by photochemicalreduction of the corresponding α-diketones and (i-C3F7)2C⋅C(O)CF3 react with hydrogen abstraction (according to ESR data). The hydroxyketoradicals are shown to dimerize reversibly, and the dimerization rate decreases in the presence of polyfluorinated alcohols due to the formation of radical–alcohol complexes.
Electrochemical fluorosulfation of perfluoroallylbenzene
作者:Sergei R. Sterlin、Vitali A. Grinberg
DOI:10.1016/s0022-1139(03)00087-3
日期:2003.8
isomerized under the action of HSO3F to form perfluoropropenylbenzene (in the form of a mixture of cis- and trans-isomers) which undergoes anodic oxidation in HSO3F to give α,β-bis(fluorosulfonyloxy)perfluoropropylbenzene (III). Reaction of III with CsF in tetraglyme gives perfluoro-2-methylbenzoxolene (XII), whereas III is converted to perfluoromethylphenyl-α-dione (IX) by reacting with AcONa/AcOH. Cyclization