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Oxidation and Reduction

“…The observed kinetics indicated the formation of peroxynitrous acid as an intermediate. 212 Alkylated phenol and methoxytoluene derivatives are selectively oxidized to the corresponding 1,4-benzoquinones in good yields with hydrogen peroxide and methyltrioxorhenium in 1-butyl-3-methylimidazolium tetrafluoroborate, a neutral ionic liquid. 213 Certain dinuclear iron complexes are found to be efficient catalysts for the oxidation of primary and secondary alcohols with hydrogen peroxide.…”

First steps of the reactions of alkanes and arenes with adamantyl cations in sulfuric acid in comparison with other reagents

“…[22][23][24][25][26][27] It was found that sulfuric acid solutions of anthracene and cyclohexene oligomers 28, 29 are active in the reactions with alkanes, whereas formaldehyde solu tions are active in the reactions with alkanes 30 and arenes. 31 The kinetics of these reactions was studied by the sub strate decay. Unlike the indicated systems in which the structure of the reactive carbocationic species was not completely revealed, the formation of the adamantyl carbocations (Ad + ) was proved for sulfuric acid solutions of 1 adamantanol, providing a possibility of the deeper study of the first step of interactions of these species with hydrocarbons.…”

“…Experimental substrate selectivities of arenes (k ArH /k PhH ) in the reactions of methylation in CH 3 Cl (reactant СH 3 + ),98 sulfuric acid hydroxymethylation (CH 2 OH + )31 , and tert butylation ((CH 3 ) 3 C + ) in the presence of BF 3 •H 3 PO 4 according to the published data 99 and in a nitromethane solution 100 catalyzed by SnCl 4 or AlCl 3 and adamantylation (Ad + ), 42 as well as the results of calculation by Eqs(18) and(19) The used α values for arenes in 70% H 2 SO 4 at 30 °С are given in parentheses. b Measured in the Bu t Br-AgClO 4 -MeNO 2 system.…”