1973 Volume 46 Issue 1 Pages 38-42
Although the apparent second-order rate constant of the amination of chloromethylated polystyrene with n-butylamine or with 2-aminobutanol decreased or increased, respectively, during the course of the amination in dioxane, as has been reported previously, both animations as well as the aminations of benzyl chloride have been found to conform to the ordinary second-order kinetics in DMF and DMSO. The viscometric measurements have indicated that the viscosity of the reaction mixture decreased during the amination with n-butylamine and increased slightly during the amination with 2-aminobutanol, but no relation between the kinetic behavior and the viscometric changes in the reaction mixtures could be found. The magnitude of the rate constants was comparable to that of the amination of benzyl chloride, and it increased with an increase in the dielectric constant of the solvents in this order: dioxane<<DMF<DMSO. The effects of the solvents on both the kinetic behavior in the aminations of the polymer and the magnitude of the rate constants have been discussed in terms of the interactions between the solvent and the solute molecules.
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