A process for the preparation of imidazolium carbenes of formula (I) wherein R
1
and R
2
which can be the same or different, are hydrogen or linear or branched hydrocarbyl groups comprising heating an imidazolium halide with a strong base under reduced pressure and separating the resultant products is described. Also described is a process for the preparation of salts of these imidazolium carbenes,
1
and their use as ionic liquids.
                            描述了一种制备式(I)的
咪唑卤代物的过程,其中R1和R2可以相同也可以不同,是氢或线性或支链烃基团,包括将
咪唑卤化物与强碱在减压条件下加热并分离产物的过程。还描述了一种制备这些
咪唑卤代物盐的过程,以及它们作为
离子液体的用途。