Isotope effects in nucleophilic substitution reactions. IV. The effect of changing a substituent at the α carbon on the structure of S<sub>N</sub>2 transition states
作者:Kenneth Charles Westaway、Zbigniew Waszczylo
DOI:10.1139/v82-360
日期:1982.10.1
Kinetic studies, secondary α-deuterium kinetic isotope effects, primary chlorine kinetic isotope effects (1), Hammett ρ values determined by changing the substituent in the nucleophile, and activation parameters have been used to determine the detailed (relative) structures of the transition states for the SN2 reactions between para-substituted benzyl chlorides and thiophenoxide ion. A rationale for
动力学研究、次级 α-氘动力学同位素效应、初级氯动力学同位素效应 (1)、通过改变亲核试剂中的取代基确定的哈米特 ρ 值和活化参数已用于确定过渡态的详细(相对)结构用于对位取代苄基氯和噻吩氧离子之间的 SN2 反应。还介绍了当对位取代的苄基化合物与带负电荷的亲核试剂反应时观察到的 U 形哈米特 ρ 图的基本原理。