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KMID : 1059519880320040291
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Journal of the Korean Chemical Society
1988 Volume.32 No. 4 p.291 ~ p.296
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Kinetics of the Reaction of Benzyl Chlorides with Pyridine in DMF under High Pressure
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Choi Kee-Joon
Lee Young-Hoon
Kyong Jin-Burm
Kim Jeong-Rim
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Abstract
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Rates of the reaction for p-nitrobenzyl chloride, benzyl chloride and p-methylbenzyl chloride with pyridine in DMF solvent have been measured by an electric conductivity method at 40°and 50℃ under various pressures. From those rate constants, the activation parameters ΔV≠, Δβ≠, ΔH≠, ΔS≠, ΔG≠) were evaluated. ΔV≠ and Δβ≠ are both negative valued, but ΔH≠ is positive and ΔS≠ is large negative value. From the evaluation of the initial state and transition state which was resulted from substituents and pressure, it was found that this reaction proceeds through bimolecular reaction.
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