Abstract
ABSTRACTThe reaction rate of enolization of p-chloroacetophenone has been studied in the presence of amino acids, namely, β-alanine, DL-alanine, L-alanine, and glycine. Maximum reaction rate was observed in the case of β-alanine at 22M concentration. The effects of parameters such as effect of ketone concentration, effect of dielectric constant, effect of catalysts, etc., have been found to exert a significant effect on the reaction rate. The effect of temperature was studied in the range of 313–328 K, and several thermodynamic parameters such as entropy (ΔS≠), enthalpy (ΔH≠), energy of activation (ΔEa), and Gibbs free energy (ΔF≠) were found to be −10.32 e.u., 17.87 cal mol−1, 19.24 kcal mol−1, and 21.20 cal mol−1, respectively. The reaction rate increased from 1.9 to 5.8 min−1 on increasing the percentage of dimethylformamide from 10 to 50% (v/v).
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