The Reaction Mechanism of 2,6-di-Tert. Butyl Phenol Alkylation by Methyl Acrylate in the Presence of 2,6-di-Tert. Butyl Phenolate of Potassium and Alkali

The reaction of 2,6-di-tert. butyl phenol alkylation in the conditions of alkali catalysis is used in the synthesis of antioxidants, inhibitors of radical reactions in the processes of polymer stabilizers production technology. The catalytic system consisting in 2,6-di-tert. butylphenolate of alkali...
Ausführliche Beschreibung

The reaction of 2,6-di-tert. butyl phenol alkylation in the conditions of alkali catalysis is used in the synthesis of antioxidants, inhibitors of radical reactions in the processes of polymer stabilizers production technology. The catalytic system consisting in 2,6-di-tert. butylphenolate of alkali metal and alkali metal hydroxide, is most efficient in the alkylation reaction of 2,6-di-tert. butyl phenol by methyl acrylate. For the investigation of the reaction mechanism of 2,6-di-tert. butyl phenol alkylation by methyl acrylate in the presence of 2,6-di-tert. butylphenolate of potassium (ArOK) and alkali (KOH) on the basis of consumption kinetics of 2,6-di-tert. butyl phenol (ArOH), the computer calculation procedure was used for the kinetic system containing 14 components with life times differing by a few magnitudes of order. The program was adapted for the operation in the operational system RT-60 of MINICOMPUTER (Model MERA-660). The kinetic scheme consists of 28 elementary stages which describe the formation mechanism of methylox compound, (4-hydroxy-3,5-di-tert. butyl phenol) potassium propionate as well as water, methyl alcohol, alkali monohydrate and ion pairs. Ausführliche Beschreibung