Functionalization of alkenes by polyfluorinated α,β-unsaturated sulphenyl chlorides Dual reactivity of perfluoro-2-methyl-2-penten-3-yl sulphenyl chloride in reactions with activated olefins
A dual reactivity of perfluoro-2-methyl-2-penten-3-yl sulphenyl chloride (1) in reactions with alkenes is described. Whereas 1 interacts with 3,3-dimethyl-1-butene and styrene in nitromethane solution in the sulphenyl chloride form, reactions with olefins that have mobile hydrogen atoms in an allylic position (e.g. allyl- and p-methoxyallyl-benzenes) occur through the tautomeric thioketone form −2
作者:V. Ya. Popkova、E. I. Mysov、M. V. Galakhov、V. K. Osmanov、L. S. German
DOI:10.1007/bf01184548
日期:1990.12
A new method has been developed for the synthesis of perfluorinated alpha,beta-unsaturated thiocyanates by the reaction of the corresponding sulfenyl chlorides with KCN in water. The thiocyanate form of perfluoro-2-methyl-2-pentene-3-thiocyanate was isomerized to the isothiocyanate form. This rearrangement is initiated by both fluoride and thiocyanate anions.
Bekker, R. A.; Popkova, V. Ya.; Knunyants, I. L., Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya
作者:Bekker, R. A.、Popkova, V. Ya.、Knunyants, I. L.
DOI:——
日期:——
Functionalization of alkenes by polyfluorinated α,β-unsaturated sulfenyl chlorides: reactions of 2-chloroperfluoro-1-cyclohexenesulfenyl chloride-1 with activated olefins
A variety of beta-chlorothioethers have been obtained by the reaction of 2-chloroperfluoro-1-cyclohexenesulfenyl chloride-1 (I) with t-butylethene, styrene, allylbenzene and p-methoxyallylbenzene in CH2Cl2 or CH3NO2. Skeletal rearrangement with 1,2-migration of the p-methoxyphenyl group occurs on reaction of I with p-methoxyallylbenzene along with the formation of addition products (Markovnikov and anti-Markovnikov adducts). A possible additive salt effect (LiClO4/CH3NO2 system) has been examined for the reaction of I with t-butylethene, allylbenzene and p-methoxyallylbenzene; the effect is noted only in the case of t-butylethene, when intramolecular rearrangement with 1,2-migration of the methyl group takes place.