The reaction of N-alkylimidazol with alkyl sulfonates, at room temperature, favors the production of 1,3-dialkylimidazolium alkane-sulfonates as crystalline solids at high yields. The alkane-sulfonate anions may be easily substituted by a series of other anions [BF
4
, PF
6
, PF
3
(CF
2
CF
3
)
3
, CF
3
SO
3
and (CF
3
SO
2
)
2
N] through simple anion, salt, or acid reactions in water at room temperature. The extraction with dichloromethane, filtration, and evaporation of the solvent, allows the production of the desired ionic liquids at a yield of 80-95%. The purity of these ionic liquids (in some cases >99.4%) is performed using the intensity of
13
C satellite signals from the magnetic resonance spectrums of the N-methyl imidazolium group as an internal standard.
N-烷基
咪唑与烷基
磺酸盐在室温下反应,有利于高产率地生成1,3-二烷基
咪唑烷
磺酸盐作为结晶固体。烷
磺酸盐阴离子可以通过简单的阴离子、盐或酸反应在室温下在
水中轻松被一系列其他阴离子[BF
4
, PF
6
, PF
3
(CF
2
CF
3
)
3
, CF
3
SO
3
和(CF
3
SO
2
)
2
N]所取代。用
二氯甲烷萃取、过滤和溶剂蒸发,可以以80-95%的产率生产所需的
离子液体。这些
离子液体的纯度(在某些情况下>99.4%)是通过使用
N-甲基咪唑基团的
13
C卫星信号强度作为内部标准来进行的。