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Abstract
Oxidation of DL-methionine (Met), sulphur-containing amino acid by Diethylammonium chlorochromate (DEACC) in dimethylsulphoxide (DMSO) is leading to produce its consecutive sulphoxide. The reaction is of first-order w. r. t. methionine and DEACC. The addition of an acid enhance the reaction rate, the effect of acidity is expressed by the relation kobs = a + b [H+ ]. The rate of the oxidation of methionine is recorded in 19 non aqueous solvent medium. The effect of solvent medium is was studied in nineteen different organic solvents. The solvent effect is evaluated by the models of Kamlet and Swain multiparametric equation. Importance of the cation solvating powers is predominantly seen in the effects of solvent medium. On the basis of results and discussion a suitable mechanism is proposed.
Published Version
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