The reactivity of the hydrofluorocarbon 1,1,1,2-tetrafluoroethane (HFC-134a) and related compounds towards base attack. The generation and stability of the tetrafluoroethyl, trifluorovinyl and related anions

Autor: I. B. Haslock, James Burdon, Paul L. Coe, Richard L. Powell
Rok vydání: 1999
Předmět:
Zdroj: Journal of Fluorine Chemistry. 99:127-131
ISSN: 0022-1139
DOI: 10.1016/s0022-1139(99)00182-7
Popis: Trifluorovinyllithium (CF2 = CFLi) has been successfully synthesised from 1,1,1,2-tetrafluoroethane using n-butyllithium at −78°C in ether. Other bases (LDA, DBU, MeLi, t-BuLi, t-BuOK) were tried with varied success. The stability of the system was dependent on temperature, concentration and solvent system employed. 1-Chloro-2,2,2-trifluoroethane (133a) led to an analogous polyfluorovinyllithium, but 1,1,1-trifluoro- and 1,1,1,2,2,2-hexafluoro- ethane did not.
Databáze: OpenAIRE