检查了 3-取代的甲苯磺酸环丁基酯(X=Ar、Cl 和 OEt)的乙酰水解,给出了速率和产物分布。对于烷基和芳基取代的化合物,限速步骤导致形成桥连的环丁基阳离子,然后重排为环丙基羰基/高烯丙基离子。3-芳基衍生物溶剂分解的 ρ 值为 -1.5,表明一些电荷转移到 3-位。3-氯环丁基甲苯磺酸酯反应仅产生转化的3-氯环丁基乙酸酯。3-乙氧基衍生物产生~1:1的相应乙酸酯混合物。有关这些反应的更多信息是通过 MP2/6-31 * 理论水平的 ab initio MO 计算获得的
检查了 3-取代的甲苯磺酸环丁基酯(X=Ar、Cl 和 OEt)的乙酰水解,给出了速率和产物分布。对于烷基和芳基取代的化合物,限速步骤导致形成桥连的环丁基阳离子,然后重排为环丙基羰基/高烯丙基离子。3-芳基衍生物溶剂分解的 ρ 值为 -1.5,表明一些电荷转移到 3-位。3-氯环丁基甲苯磺酸酯反应仅产生转化的3-氯环丁基乙酸酯。3-乙氧基衍生物产生~1:1的相应乙酸酯混合物。有关这些反应的更多信息是通过 MP2/6-31 * 理论水平的 ab initio MO 计算获得的
Products from solvolysis reactions that form (2-phenylcyclopropyl)carbinyl cations
作者:R. Esala P. Chandrasena、David Aebisher、Martin Newcomb
DOI:10.1002/poc.951
日期:2005.9
Productsfrom solvolytic reactions that form the (2-phenylcyclopropyl)carbinyl cation were determined. The majority of products (> 98%) derived from the 1-phenyl-3-butenyl cation, consistent with reports by Wiberg and co-workers. Small amounts of products derived from the 1-phenyl-1-cyclopropylmethyl cation also were found; these products were previously predicted to be formed from reactions of the