345-40-4Relevant articles and documents
Pentafluoroethylation of Carbonyl Compounds Using HFC-125 in a Flow Microreactor System
Ono, Makoto,Sumii, Yuji,Fujihira, Yamato,Kagawa, Takumi,Mimura, Hideyuki,Shibata, Norio
, p. 14044 - 14053 (2021/06/28)
The protocol of micro-flow nucleophilic pentafluoroethylation using pentafluoroethane (HC2F5, HFC-125), a nontoxic, inexpensive, and commercially available greenhouse gas, is described. The micro-flow pentafluoroethylation by HFC-125 proceeded smoothly at
Pentafluoroethyl group containing production of alcohols, organic semiconductor material and intermediate compound of the enzyme activity inhibitor
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Paragraph 0057-0059; 0066-0068, (2021/10/15)
[A] a pharmaceutical, agrochemical, a pentafluoroethyl group containing alcohol compound useful as a method for producing polymeric functional materials, as well as, organic semiconductor material and enzyme activity inhibitor of the intermediate compound
On Pentakis(pentafluoroethyl)stannate, [Sn(C2F5)5]?, and the Gas-Free Generation of Pentafluoroethyllithium, LiC2F5
Wiesemann, Markus,Kl?sener, Johannes,Neumann, Beate,Stammler, Hans-Georg,Hoge, Berthold
, p. 1838 - 1843 (2018/02/10)
Pentafluoroethyllithium, LiC2F5, has been established as an efficient and versatile reagent for the transfer of the pentafluoroethyl unit to a number of electrophiles. Here, the stability of this species up to ?40 °C is of advantage, particularly in comparison to its smaller congener LiCF3. The usual production of LiC2F5, however, from gaseous HC2F5 or IC2F5 and strong bases requires specially designed apparatuses, which severely impeded its value as a laboratory reagent. In this contribution we communicate an alternative gas-free and highly efficient protocol for the synthesis of LiC2F5 from the already commercialized stannate salt [PPh4][Sn(C2F5)5]. The [Sn(C2F5)5]? anion represents not only the first example of a structurally characterized hypervalent pentaalkylstannate but also serves as a precursor for the synthesis of the homoleptic tetrakis(pentafluoroethyl)stannane, Sn(C2F5)4. The reaction of the latter with n-butyllithium provides an insight into the mechanism of LiC2F5 generation.