作者:Kenneth B. Wiberg、David Shobe、Gordon L. Nelson
DOI:10.1021/ja00076a024
日期:1993.11
the alkyl- and aryl-substituted compounds, the rate-determining step leads to the formation of a bridged cyclobutyl cation which then rearranges to a cyclopropylcarbinyl/homoallyl ion. The value of ρ for the solvolysis of the 3-aryl derivatives was -1.5, suggesting some charge transfer to the 3-position. The 3-chlorocyclobutyl tosylates react to give only the inverted 3-chlorocyclobutyl acetates. The
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