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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 36, Number 4
JKCSEZ 36(4)
August 20, 1992 

 
Title
A Study for the Reaction of β-Picoline with p-Substituted Benzoyl Chlorides by Pressure

압력변화에 따른 β-피콜린과 염화벤조일류의 반응에 대한 연구
Author
Young Cheul Kim, Se Kyong Kim

김영철, 김세경
Keywords
Abstract
10℃와 20℃에서 β-피콜린과 치환된 벤조일클로라이드류의 반응을 압력변화에 따라 아세토니트릴용매내에서 전기전도도법으로 연구하였다. 유사 1차속도상수와 2차속도상수로부터 여러 가지 활성화파라미터들(△V≠, △β≠, △H≠, △S≠ and △G≠)을 구하고, Hammett ρ값의 압력의존성을 설명하였다. △V≠, △β≠ 및 △S≠ 는 모두 음의 값을 나타내었고, 압력증가에 따라 속도상수와 Hammett ρ값은 증가하며, 결합형성이 더욱 촉진된 반응메카니즘으로 진행됨을 알 수 있었다.

The reaction of β-picoline with substituted benzoyl chlorides has been studied by means of conductometry under various pressures in acetonitrile. From the values of pseudo-first order and second order rate constants, the activation parameters (△V≠, △β≠, △H≠, △S≠ and △G≠) and the pressure dependence of Hammett ρ value were studied. The activation volume, the activation compressibility coefficient and the activation entropy were all negative. By increasing pressure the rate constant and Hammett ρ value were increased, and the reaction mechanism was proceed in bond formation favored.

Page
517 - 522
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