1648-99-3Relevant articles and documents
The first example of sulfinatodehalogenation of 2,2,2-trifluoroethyl halides: A novel method for trifluoroethylation of alkenes and alkynes
Long, Zheng-Yu,Chen, Qing-Yun
, p. 8487 - 8490 (1998)
2,2,2-Trifluoroethylation of alkenes and alkynes with 2,2,2- trifluoroethyl iodide or bromide and sodium dithionite in DMSO or CH3CN/H2O can occur under mild conditions.
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Eleev,A.F. et al.
, (1978)
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The activation of carbon-chlorine bonds in per- and polyfluoroalkyl chlorides: DMSO-induced hydroperfluoroalkylation of alkenes and alkynes with sodium dithionite
Long, Zheng-Yu,Chen, Qing-Yun
, p. 4775 - 4782 (2007/10/03)
In DMSO, the addition reactions of perfluoroalkyl chlorides, R(F)Cl, to alkenes or alkynes can occur smoothly in the presence of 1.5 equiv of Na2S2O4 and NaHCO3 at 75-80 °C for 4-10 h to give the corresponding adducts (RCH2CH2RF or RCH = CHR(F)). Ethyl chlorofluoro- (1f), chlorodifluoro- (1g) acetates, even nonfluorinated compounds, such as ethyl dichloro- (1h), chloro- (1i) acetates, and chloroform (1j) can undergo the similar reaction. Treatment of ω-iodo (or chloro-) perfluoroalkyl chlorides [X(CF2)(n) Cl, n = 2, 4, X= I or Cl] with > 3 equiv of alkenes and Na2SO4 gives directly the symmetrically disubstituted alkanes (RCH2CH2)2(CF2)(n). The symmetrically and unsymmetrically disubstituted adducts RCH2CH2(CF2)(n)CH2CH2R' from ω-iodoperfluoroalkyl chlorides can be also obtained stepwise, i.e., through the further addition reactions of monoadducts, RCH2CH2(CF2)(n)Cl to olefins. However, for α,ω- dichloroperfluoroalkanes, the similarly stepwise reactions with an alkene is not clean, both bis-adducts and the corresponding ω-hydrides, RCH2CH2(CF2)(n)H as byproducts are also formed. In the absence of alkenes or alkynes, per- and polyfluoroalkyl chlorides can be converted to their sulfinate salts and sulfonyl chlorides.
Amine-Stabilized Sulfenes, their Synthesis and Structure
Hartwig, Uwe,Pritzkow, Hans,Sundermeyer, Wolfgang
, p. 1435 - 1440 (2007/10/02)
The synthesis of quinuclidine-stabilized sulfene of the type XCH2-SO2-C(Y)=SO2- + (5a-d), whereas the corresponding methyl quinuclidinium salts (6a, b) are formed under methanolysis.