Molecular Dynamics Simulations of the Initial-State Predict Product Distributions of Dediazoniation of Aryldiazonium in Binary Solvents
作者:Gustavo N. Cruz、Filipe S. Lima、Luís G. Dias、Omar A. El Seoud、Dominik Horinek、Hernan Chaimovich、Iolanda M. Cuccovia
DOI:10.1021/acs.joc.5b01289
日期:2015.9.4
The dediazoniation of aryldiazonium salts in mixed solvents proceeds by a borderline SN1 and SN2 pathway, and product distribution should be proportional to the composition of the solvation shell of the carbon attached to the −N2 group (ipso carbon). The rates of dediazoniation of 2,4,6-trimethylbenzenediazonium in water, methanol, ethanol, propanol, and acetonitrile were similar, but measured product
混合重溶剂中芳基重氮盐的脱重氮作用通过边界线S N 1和S N 2进行,产物分布应与附着在-N 2上的碳的溶剂化壳的成分成比例组(ipso碳)。在水,甲醇,乙醇,丙醇和乙腈中2,4,6-三甲基苯重氮的重氮化反应速率相似,但测得的产物分布明显取决于水/助溶剂混合物的性质。在这里,我们证明了由经典分子动力学模拟计算得出的ipso碳第一溶剂化壳中的溶剂分布等于测得的产物分布。此外,我们表明,无论初始状态的电荷分布如何,即,正电荷是涂抹在分子上还是位于苯基部分上,反应中心周围的溶剂分布都几乎相同。