The Phenolysis of Tetrahydrolinalyl and 2-Octyl Systems. The Rates, Steric Courses, and Product Distributions
作者:Kunio Okamoto、Tomomi Kinoshita
DOI:10.1246/bcsj.45.2802
日期:1972.9
other for tetrahydrolinalyl chloride (at 25.0°C) or p-nitrobenzoate (at 100.0°C), and also for 2-octyl tosylate (at 75.0°C), exhibiting the typical features of the nN1 solvolysis rate constant. In the absence of the amine (or sodium phenoxide), the kt diminishes to show a gap between the kp and the kt, indicating the occurrence of an ion-pair return in the phenolysis for both systems. Under the same
作为具有光学活性的三级和二级体系,已选择氯化四氢芳樟酯(甲基乙基异己基羰基)或对硝基苯甲酸酯和对甲苯磺酸 2-辛酯,并在存在下测量了它们对 SN1 酚分解的滴定和极化速率常数(kt 和 kp)三乙胺(或苯酚钠)的 50 wt% 苯酚-苯溶液。在较高的胺(或酚盐)浓度下,四氢芳樟酰氯(25.0°C)或对硝基苯甲酸酯(100.0°C)以及甲苯磺酸 2-辛酯(75.0°C)的 kt 和 kp 彼此一致,表现出 nN1 溶剂分解速率常数的典型特征。在没有胺(或苯酚钠)的情况下,kt 减小以显示 kp 和 kt 之间的间隙,表明两个系统在酚解中都发生了离子对返回。