Kinetics and mechanism of nucleophilic displacements with heterocycles as leaving groups. Part 23. Studies at the borderlines between reactions proceeding (<i>i</i>) via free carbocations, (<i>ii</i>) via rate-determining formation of ion–molecule pairs, and (<i>iii</i>) via rate-determining nucleophilic attack on ion–molecule pairs
作者:Alan R. Katritzky、Bogumil Brycki
DOI:10.1139/v86-192
日期:1986.6.1
first-order reaction via nucleophilic trapping of intimate ion–molecule pairs and first-order reaction via the formation of free carbocations, both mechanisms proceed independently, without merging. Similarly at the borderline between first-order (rate-determining formation) and second-order (rate-determining nucleophilic attack) reactions of intimate ion–molecule pairs, both reactions again proceed
有证据表明,在通过亲核离子-分子对的亲核俘获的一级反应和通过形成游离碳正离子的一级反应之间的边界处,两种机制独立进行,没有合并。类似地,在紧密离子-分子对的一级(决定速率的形成)和二级(决定速率的亲核攻击)反应之间的边界处,这两个反应再次独立进行。