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
作者:J. Burdon、P.L. Coe、I.B. Haslock、R.L. Powell
DOI:10.1016/s0022-1139(99)00182-7
日期:1999.11
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
三氟 乙烯基锂(CF 2 = CFLi)已在1,78,C的正丁基锂中在乙醚中成功地由1,1,1,2-四氟乙烷合成。其他基地(LDA,DBU,将MeLi,牛逼正丁基锂,牛逼-BuOK)进行了尝试与不同程度的成功。系统的稳定性取决于所用的温度,浓度和溶剂系统。1-氯-2,2,2-三氟乙烷(133a)生成了类似的多氟乙烯基锂,但1,1,1-三氟和1,1,1,2,2,2-六氟乙烷却没有。