Oxidation of some cage hydrocarbons by dioxiranes. Nature of the transition structure for the reaction of C–H bonds with dimethyldioxirane: a comparison of B3PW91 density functional theory with experiment
作者:Stanislav A. Grabovskiy、Arcadiy V. Antipin、Elena V. Ivanova、Vladimir A. Dokichev、Yuriy V. Tomilov、Natalie N. Kabal'nova
DOI:10.1039/b707753j
日期:——
B3PW91) using restricted and unrestricted methods was employed to study the oxidation reaction of the C-H bond of cage hydrocarbons , adamantane, and acetone with DMD. The kinetic isotopic effect calculated using unrestricted methods agreed with experiment. The reaction mechanism in terms of the concerted oxygen insertion vs. the radical part is discussed.
二甲基-(DMD)和甲基(三氟甲基)-二氧杂环戊烷用于螺1',7-环丙烷-(E)-2-甲基双环[2.2.1]庚烷}(),三环[3.2.2.0(2) ,4)]壬烷(),exo-endo-endo-()和exo-exo-exo-()七环[9.3.1.0(2,10).0(3,8).0(4,6)。 0(5,9).0(12,14)]十五烷,以叔醇为主要产物。测量了被DMD氧化的速率常数,并确定了Arrhenius参数。DFT理论(B3LYP和B3PW91)采用限制和非限制方法进行了研究,研究了笼型碳氢化合物,金刚烷和丙酮的CH键与DMD的氧化反应。使用不受限制的方法计算的动力学同位素效应与实验一致。从协同的氧插入与自由基部分的角度讨论了反应机理。