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http://dx.doi.org/10.5762/KAIS.2013.14.11.6000

A Study for Kinetics and Oxidation Reaction of Substituted Benzyl Alcohols using Cr(VI)-Heterocyclic Complex(Cr(VI)-Isoquinoline)  

Park, Young-Cho (Department of Chemical Engineering, Kangwon National University)
Kim, Young-Sik (Department of Chemical Engineering, Kangwon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.11, 2013 , pp. 6000-6007 More about this Journal
Abstract
Cr(VI)-heterocyclic complex[Cr(VI)-isoquinoline] was synthesized by the reaction between of heterocyclic compound(isoquinoline) and chromium trioxide, and characterized by IR and ICP analysis. The oxidation of benzyl alcohol using Cr(VI)-isoquinoline in various solvents showed that the reactivity increased with the increase of the dielectric constant(${\varepsilon}$), in the order : cyclohexene, m-Br, m-$NO_2$). Electron- donating substituents accelerated the reaction, whereas electron acceptor groups retarded the reaction. The Hammett reaction constant(${\rho}$) was -0.69(308K). The observed experimental data have been ratiolized. The hydride ion transfer causes the prior formation of a chromate ester in the rate-determining step.
Keywords
Chromate ester; Hydride ion transfer; Hammett reaction constant(${\rho}$); Rate-Determining; Step. substituted benzyl alcohol;
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Times Cited By KSCI : 6  (Citation Analysis)
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