2043-53-0Relevant articles and documents
Reactions of perfluoroalkyl iodides with CC-multiple bonds induced by transition metal centers
Werner, Konrad Von
, p. 229 - 234 (1985)
Additions of perfluoroalkyl iodides RFI to 1-alkenes can be catalyzed by transition metals, especially by noble metals such as ruthenium or platinum.Complexes of group VI-VIII metals in low oxidation states are even more effective and may also be employed for the addition of RFI to alkynes.Heterogeneous metal catalysts facilitate the transfer of the perfluoroalkyl group from RFI to aromatic ring systems.Iodo-perfluoroalkanes 1 belong to the most important intermediates in organofluorine chemistry.The addition of 1 to alkenes according to is known to be a radical process which can be initiated by means of heat, UV- or γ-radiation, electrocatalysis or by organic azo or peroxo compounds.We found that this type of reactions can generally be carried out using two kinds of transition metal catalysts.
Cap-and-tag solid phase oligosaccharide synthesis
Carrel, Frederic R.,Seeberger, Peter H.
, p. 2058 - 2065 (2008/09/19)
(Chemical Equation Presented) A new "cap-and-tag" strategy is applied to solid phase oligosaccharide synthesis. Acetyl-capping and fluorous-tagging allowed for the facile separation of the desired F-tagged oligosaccharide from the acetyl-capped deletion sequences using fluorous solid phase extraction. To illustrate this approach, a protected Glc-β-(1→6) -Man-α-(1→6)-Glc-β-1→pentenyl trisaccharide was synthesized.
Ionic transformations in extremely nonpolar fluorous media: Phase transfer catalysis of halide substitution reactions
Consorti, Crestina S.,Jurisch, Markus,Gladysz, John A.
, p. 2309 - 2312 (2008/02/05)
Fluorous solutions of alkyl halides R18(CH2) mX (m = 2, 3; X = Cl, Br, I) are inert toward solid or aqueous NaCl, NaBr, and Kl, but halide substitution occurs in the presence of fluorous phosphonium salts (10 mol %, 76-100 °C).
Purification of fluorinated alcohols
-
Page/Page column 4, (2008/06/13)
A process for reducing the level of perfluoroalkanoic acids, perfluoroalkanoic esters, and perfluoroalkyliodides in fluorinated alcohols comprising heating a fluorinated alcohol, or mixtures thereof, containing said acids, esters, or iodides to a temperature of at least 175° C. in the presence of water and a base additive is disclosed.