- FLUOROALKYLATION OF AROMATIC COMPOUNDS
-
Perfluoroalkylation of benzene, halobenzenes, pyridine, furan and thiophene has been accomplished through thermolysis of perfluoroalkyl iodides (CF3I, n-C10F21I and RfORfI) in the presence of the appropriate aromatic compound.Yields of alkylated products vary depending on temperature, presence of an HI acceptor and reactants ratio.Isomeric mixtures are obtained with halobenzenes, pyridine and thiophene.Furan however yields only the alpha substituted product.
- Cowell, Allan B.,Tamborski, Christ
-
-
Read Online
- Synthesis method of straight-chain perfluoroalkanes
-
The invention relates to a synthesis method of straight-chain perfluoroalkanes, which comprises the following steps: reaction of perfluoroalkyl iodine with alcohol solution of sodium alcohol at a certain temperature to purify 1-hydroperfluoroalkanes; reaction of 1-hydroperfluoroalkanes with fluorine gas at a certain temperature to purify straight-chain perfluoroalkanes. The synthesis method of theinvention has mild reaction conditions, high product yield, and is beneficial to cost saving. The process has low energy consumption, easy operation and is conducive to industrial production.
- -
-
Paragraph 0020; 0021; 0024
(2019/05/08)
-
- On the preparation of 1H-perfluoroalkanes and a mechanism for the reduction of perfluoroalkyl iodides
-
1H-Perfluoroalkanes are prepared by sodium methoxide reduction of 1-iodoperfluoroalkanes.The experimental evidence indicates that the reaction proceeds either through a radical or a thermal mechanism.We have found that a high yield of 1H-perfluoroalkanes at complete conversion can be accomplished at atmospheric pressure using technology. - Keywords: 1H-Perfluoroalkanes; Methyl hypoiodide; Reduction; Mass spectrometry
- Howell, J.L.,Muzzi, B.J.,Rider, N.L.,Aly, E.M.,Abouelmagd, M.K.
-
-
- A novel synthesis of per(poly)fluoroalkyl aldehydes
-
A novel synthesis of per(poly)fluoroalkyl aldehydes in high yield by the reaction of per(poly)fluoroalkyl iodides or bromides with dimethylformamide initiated by a PbBr2(catalyst)/Al bimetal redox system is described.
- Hu, Chang-Ming,Tang, Xiao-Qing
-
p. 217 - 222
(2007/10/02)
-
- Cobaloxime-Catalyzed Hydroperfluoroalkylation of Electron-Deficient Alkenes with Perfluoroalkyl Halides: Reaction and Mechanism
-
Direct hydroperfluoralkylation of electron-deficient alkenes - ethyl acrylates 4, 7, and 8, acrylonitrile (5), and methyl vinyl ketone (6) - with perfluoroalkyl halides RfX (1, X = I; 2, X = Br) in the presence of cobaloxime(III) (3) and zinc gives 1:1 hydroperfluoroalkylation adducts in good yields.This reaction provides a convenient synthesis of β-(perfluoroalkyl)carboxylic esters 9, 12, and 13, nitriles 10, and ketones 11.Details of the reaction including effect of solvent, temperature, and ratio of reagents were examined.The reaction is proposed to proceed via a radical mechanism initiated by low-valent cobalt.
- Hu, Chan-Ming,Qiu, Yao-Ling
-
p. 3339 - 3342
(2007/10/02)
-
- Perfluoroalkyl compounds and process for preparing the same
-
Perfluoroalkyl compounds represented by the formula (I): STR1 wherein Rf represents a perfluoroalkyl group having 1 to 20 carbon atoms, Ar represents a substituted or unsubstituted phenyl group wherein the substituent is an alkyl group having 1 to 4 carbon atoms or a halogen atom, I represents an iodine atom, and A represents a perfluoroalkyl group having 1 to 20 carbon atoms which can be the same or different from Rf, a hydroxy group an alkyl group having 1 to 4 carbon atoms, an aryl group or a halogen atom, and processes for preparing the perfluoroalkyl compounds represented by the formula (I).
- -
-
-