New Chiral Ionic Liquids Based on Enantiopure Sulfate and Sulfonate Anions for Chiral Recognition
作者:Andreas Winkel、René Wilhelm
DOI:10.1002/ejoc.201000801
日期:2010.10
with chiral anions is described. Chiral sulfate anions were prepared from alcohols of the "chiral pool" in good yields. Subsequent ion metathesis resulted in new salts with tetrabutylphosphonium and 1-butyl-3-methylimidazolium (BMIM) cations. In addition, the synthesis of chiral sulfonate anions from (R)-phenylethylamine and formaldehyde-sodium hydrogen sulfate, or sodium vinyl sulfonate is shown, giving
描述了具有手性阴离子的新型手性离子液体的合成。手性硫酸根阴离子由“手性池”的醇以良好的产率制备。随后的离子复分解产生了具有四丁基鏻和 1-丁基-3-甲基咪唑鎓 (BMIM) 阳离子的新盐。此外,还显示了从 (R)-苯乙胺和甲醛-硫酸氢钠或乙烯基磺酸钠合成手性磺酸根阴离子,得到新的布朗斯台德碱性手性离子液体。探索了新离子液体作为手性位移试剂的潜力。除了 Mosher 酸和布朗斯台德碱性离子液体之外,还可以使用具有手性盐的 2,2,2-三氟-1-苯基乙醇。发现中性醇通过氢键与手性阴离子相互作用。