Reactions of 2,6-dinitro and 2, 4-dinitrohalobenzenes with potassium salts of P-diketones, of a-diketoesters, of p-ketonitriles, of a-cyanoesters were investigated and substitution products were obtained in dimethylsulfokside. Pseudo-first order rate coefficients of some reactions were determined in the same solvent by the photometric method to be confirmed the Two-stage mechanism and Cl^Br > I, reactivity order was found