Quaternary ammonium ionic liquids containing fluorous ponytails: Competitive alkylation and elimination reactions of I(CH2)nRf (n=2, 3) with tertiary amines
作者:Hana B. Alhanash、Alan K. Brisdon
DOI:10.1016/j.jfluchem.2013.09.009
日期:2013.12
The formation of quaternary ammonium iodides possessing a fluorine-containing chain has been investigated. Reactions of tertiary amines, such as i-PrMe2N and n-BuMe2N with I(CH2)n(CF2)m(CF3), (n = 2, m = 5 and 7) do not cleanly yield the anticipated quaternary ammonium halide salt, instead elimination occurs and [RMe2NH]I (R = i-Pr, n-Bu) and CH2CH(CF2)m(CF3) are formed. This is confirmed by the crystallographic
已经研究了具有含氟链的碘化季铵盐的形成。叔胺的反应,如我-PrMe 2 N和Ñ -BuMe 2 n,其中I(CH 2)Ñ(CF 2)米(CF 3),(Ñ = 2,米 = 5和7)不干净收率预期的季铵卤化物的盐,而不是发生消除和[RME 2 NH] I(R = 我-Pr,ñ -Bu)和CH 2 CH(CF 2)米(CF 3) 形成。这是通过[的晶体表征证实Ñ -BuMe 2被发现采用在固体状态胶束型布置NH]予。增加间隔基链长度以Ñ = 3确实结果在期望的季铵卤化物盐,[RME 2 N(CH 2)3(CF 2)米(CF 3)] I,(米 = 3,7)。MeBuN的季铵((CH 2)3 C ^ 8 ˚F 17)与1-碘辛烷,得到不对称季铵盐具有氟化烷基链,[ Ñ-BuMeOctN((CH 2)3 C ^ 8 ˚F 17)]我。不同于先前研究perprotio系统,具有长氟化链低对称性铵系统不会导致室温离子液体。