Monooxygen transfer potential of the transannular ozonide of 9-tert-butyl-10-methylanthracene
作者:Yoshikatsu Ito、Akira Matsuura、Teruo Matsuura
DOI:10.1016/s0040-4039(01)80194-5
日期:——
The efficiency of oxygen transfer from the transannularozonide 1 to several organic substrates was investigated. The efficiency was estimated to be as high as 90% in the case of Ph3P as the substrate.
Oxidizing properties of the tert-butyl hydroperoxide-tetra-tert-butoxychromium system
作者:L. P. Stepovik、A. Yu. Potkina、A. I. Poddelskii
DOI:10.1134/s1070363213110066
日期:2013.11
tert-Butyl hydroperoxide reacts with the tetra-tert-butoxychromium by oxidizing the latter to chromyl Cr-V=O (C6H6, 20 degrees C). At t-BuOOH-Cr(OBu-t)(4) ratio of 2 : 1 or higher, oxygen is released. The occuring processes include the formation of chromium-containing peroxides and peroxytrioxydes. The t-BuOOH-Cr(OBu-t)(4) system oxidizes aromatic hydrocarbons of various structures (anthracene, 9,10-dimethylanthracene, 1,1-diphenylethylene, alkylarenes), as well as primary and secondary alcohols. Depending on the structure of the substrate, the oxidants are: in situ generated oxygen including that in the singlet state, peroxy radicals, or chromium-containing peroxides.
Interaction of 9-substituted anthracenes with oxidation systems tert-butylhydroperoxide-metal tert-butoxide
作者:L. P. Stepovik、Yu. B. Malysheva、G. K. Fukin
DOI:10.1134/s1070363215060080
日期:2015.6
9-R-Anthracenes (R = Me, Ph) are effective acceptors of peroxyl and metalalkoxyl radicals in the systems tert-butylhydroperoxide-metal tert-butoxide (M = Al, V, Cr; C6H6, 20A degrees C). Isolation of 9-R-9,10-dihydro-9,10-di-tert-butylperoxyanthracenes, 10-R-10-tert-butylperoxy-9-anthrones as major products reliably confirms the formation of tert-butylperoxy radicals and can be used for quantitative assessment of their content.