Abstract
The nucleophile-specific parameters N and sN, as defined by the linear free energy relationship log k = sN(N+E) (J. Am. Chem. Soc. 2001, 123, 9500 - 9512), were determined for five imines 1a-e by studying the kinetics of their reactions with benzhydrylium ions in dichloromethane solution at 20 °C. These parameters allowed us to include representative Schiff bases into our comprehensive nucleophilicity scale and compare their reactivities with those of other N-nucleophiles
摘要
通过研究五种亚胺 1a-e 在 20 °C二氯甲烷溶液中与苯氢鎓离子反应的动力学,确定了由线性自由能关系 log k = sN(N+E) (J. Am. Chem. Soc. 2001, 123, 9500 - 9512) 定义的亲核特异性参数 N 和 sN。这些参数使我们能够将具有代表性的希夫碱纳入我们的综合亲核度表中,并将它们的反应活性与其他 N-亲核物的反应活性进行比较