Oxydation of 1-(4-nitrophenyl)-2-acetylaminoethanol with ozone in an organic solvent Utlenianie 1-(4-nitrofenylo)-2-acetyloaminoetanolu ozonem w rozpuszczalniku organicznym

Study on liquid-phase oxidation of 4-acetoxytoluene with ozone Badanie procesu utleniania 4-acetoksytoluenu ozonem w fazie ciekłej

“…According to the existing notions of oxidation reactions of arenes with molecular oxygen and ozone and the kinetic data obtained, the following scheme of selective oxidation of 4-AAT in acetic and hydride (Scheme 2) is to be expected: Lviv Polytechnic National University Institutional Repository http://ena.lp.edu.ua If the system is catalyzed with manganese(II) acetate, the active form of catalyst is Mn(III), which involves the substrate to methyl group oxidation with the formation of benzyl radical (7). The introduction of potassium bromide in the oxidation scheme leads to the formation of manganbromide ion-radical (4,6), which is more active than Mn(III); benzyl radical is formed mainly according to the reaction (8)…”

“…Ozone concentration in the gaseous phase has been determined by spectrophotometric method using SF-46 [7] spectrometer. The concentration of 4-acetylaminotoluene and the products of its subsequent transformation in solution has been determined by gasliquid chromatography with flame ionization detector on the column of 3 m length and 4 mm diameter filled with Inerton AW-DMCS carrier, treated with 10% solution of NaOH and covered with the stationary phase Apiezon L in the amount of 10 % relative to the carrier weight under the following conditions: the thermostat temperature according to the program is 373-513 K for 15 min; the rate of gas carrier (nitrogen) is 1.8; hydrogen 1.8, air 18 l/h.…”

Research of the Process of Liquid Phase Selective Oxidation of 4-Aminotoluene with Ozone

“…According to the existing notions of oxidation reactions of arenes with molecular oxygen and ozone and the kinetic data obtained, the following scheme of selective oxidation of 4-AAT in acetic and hydride (Scheme 2) is to be expected: If the system is catalyzed with manganese(II) acetate, the active form of catalyst is Mn(III), which involves the substrate to methyl group oxidation with the formation of benzyl radical (7). The introduction of potassium bromide in the oxidation scheme leads to the formation of manganbromide ion-radical (4,6), which is more active than Mn(III); benzyl radical is formed mainly according to the reaction (8)…”