Fluorinated thiol

Fluorinated ionic liquids, characteristics, 1, 854 Fluorinated molecules, coordination, 1, 727 Fluorinated thiols, in nanoparticle preparation, 12, 80 Fluorination, and iridium carbonyl cluster complexes, 7, 299... 

Figure 4.7 Structure of the amphiphilic fluorinated thiol used for the synthesis of water-soluble AuNPs.169...

Thus, RF—I can be grafted more easily than RF—C2H4SH—. Furthermore, both fluorinated thiols and functional ones (HS—CH2 — C02H) may be grafted to make them emulsifiable in water. 

We repeated this grafting reaction [100] by photochemical initiation and we showed that if the addition onto the 1,2 double bands was favored, the fluorinated thiols could be grafted onto all double bands of PBHT and diols with a fluorine amount of 55% could be obtained. Moreover, this study shows an improvement of the dispersion (observed in G.P.C.) when the grafting was realized by photochemical initiation in comparison to that realized by classical initiators. 

Other Authors used Fluorinated Thiols as Telogens Gresham [171] studied the following monoaddition ... 

Furthermore, Gresham [171] performed the addition of fluorinated thiols onto telechelic alkenes and obtained a primary-primary diol as follows ... 

The acylation of fluorinated thiols proceeds easily and in good yields. ... 

Supercritical fluids may be utilized for the synthesis of metal nanoparticles. Perfluorodecanethiol-stabilized silver nanocrystals were synthesized in supercritical CO2 through arrested precipitation, by reducing silver acetylacet-onate with hydrogen in the presence of fluorinated thiol (Figure 8). The CO2 density used during synthesis controls the particle size and polydispersity. At... 

A fluorinated thiol is reacted with monochlorohydrin and the resulting alcohol is oxyethylated to yield a nonionic surfactant [238]. Perfluoroalkylmercap-tan, RfCH2CH2SH, epichlorohydrin, and Carbowax 350 were reacted to prepare the surfactant RfCH2CH2SCH2CH(OH)CH20(CH2CH20)7CH3 [239]. 

Displacement of the sulfhydryl group in primary thiols, like L cysteine and 2-diethylaminoethanethiol, requires elemental fluorine, the most active oxidant Elemental sulfur is the major by-product in those reactions [7] (equation 2)... 

Perfluoroalkyl)ethane thiols have been used as precursors to fluorinated surfactants and products for hydro- and oligophobic finishing of substrates such as textiles and leather (1). The synthesis of 2-(perfluoroalkyl)ethane thiol and a byproduct bis-(-2-perfluoroalkylethane)-disulfide (5-10%) has been practiced via the reaction of 2-(perfluoroalkyl)ethane iodide with thiourea to form an isothiuronium salt which is cleaved with alkali or high molecular weight amine as shown in Equation 1 for 2-(perfluorohexyl)ethane iodide (1). 

Ethers and sulfides bearing the CF3CHFCF2- group are readily prepared by addition of the alcohol or thiol to hexafluoropropene. Some data from their fluorine spectra are given in Scheme 6.16, along with proton data. With the CHF carbon being chiral, the CF2 group should appear as an AB quartet. 

As we have seen (pp. 50 et seq.) the reaction between phosphorus oxydichlorofluoride and alcohols, phenols and thiols, affords dialkyl, dicyctoalkyl, diaryl phosphorofluoridates and dialkyl phosphorodithiolates. In a Report1 to the Ministry of Supply on fluorophosphonates a description was given of a new type of nitrogen fluorophosphonate formed by the action of 4 mol. of aniline on 1 mol. of phosphorus oxydichlorofluoride, the fluorine atom being unaffected ... 

Anodic fluorination of thiols was reported [28] providing a route to perfluo-roalkyl derivatives of sulfur hexafluoride though the yields of products are not high. The process, achieved in a system of HF/NaF at a Ni anode with helium bubbling through the solution, leads to different perfluorinated products (Scheme 8). 

Difluorodifluoroaminomethanesulfenyl fluoride, NFgCFgSF, is formed among other products by the fluorination of AgSCN or KSCN 32). Perfluorooctanesulfenyl fluoride, CF3(CF2)7SF, is obtained by electrolytic fluorination of the appropriate thiol 152). 

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