Abstract
The kinetics of the allylation of 4-bromophenol in a two-phase alkali solution/organic solvent by phase transfer catalysis was studied. In order to study the chemical kinetics, the effect of agitation speed on the conversion was first investigated. It was found that the reaction rates were highly affected by interface diffusion when the agitation speed was less than 600 rpm. The effects of water content, concentration of potassium hydroxide, concentration of reactants, solvents, catalysts and temperature on the conversion were also studied. Pseudo-first-order kinetics can be used to describe the reaction rate by applying an excess amount of water-soluble 4-bromophenol to the reaction system. The apparent reaction rate constants were calculated, and the activation energies of the reactions using different catalysts were also determined.
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