liquid-liquid- and liquid-solid two-phase systems. The tetrakis[3,5-bis(trifluoromethyl)phenyl]borate ion was effective as an anionic catalyst to accelerate the reactions. Comparisons of the reaction rates in the two-phase system with those in solution systems indicated that the acceleration was due to the increased activity of the cationic reagent, partly by solubilization and partly by the dehydration
阴离子催化的相转移催化在
芳烃重
氮离子与一系列液-液-液-固两相系统中的重
氮组分的重
氮偶联反应中得到证实。四[3,5-双(三
氟甲基)
苯基]
硼酸根离子作为阴离子
催化剂可有效加速反应。两相系统中的反应速率与溶液系统中的反应速率的比较表明,加速是由于阳离子试剂的活性增加,部分是由于溶解,部分是由于非极性有机相中此类阳离子物质的
脱水。