The anionic and the cationic partners of ionic liquids may act cooperatively and independently as nucleophilic and electrophilic catalysts. This ambiphilic propensity was demonstrated by kinetically discriminating the contributions of the anion (nucleophilic catalyst) and of the cation (electrophilic catalyst) to the solvent-free BaylisâHillman dimerization of cyclohexenone catalysed by ionic liquids.
离子液体的阴离子和阳离子伙伴可以协同或独立地作为亲核催化剂和亲电催化剂发挥作用。这种双亲性质通过在无溶剂条件下,利用
离子液体催化
环己烯酮的Baylis-Hillman二聚反应,从动力学上区分阴离子(亲核催化剂)和阳离子(亲电催化剂)的贡献得以证实。