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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 30, Number 3
JKCSEZ 30(3)
June 20, 1986 

Solvolysis of 3-Chloro-1,2-benzisothiazole-1,1-dioxide (pseudosaccharin chloride

3-Chloro-1,2-benzisothiazole-1,1-dioxide (pseudosaccharin chloride)의 가용매 분해반응
In-Sun Koo, Jeong-Ja Kim, Young-Jin Yoon, Ikchoon Lee

구인선, 김정자, 윤용진, 이익춘
MeOH-H2O, EtOH-H2O, MeOH-MeCN and MeOH-(Me)2CO 혼합용매계에서 pseudo-saccharinechloride의 가용매분해반응에 대한 유사일차 반응속도상수를 여러 온도에서 구하였다. Kivinen식의 n값과 Grunwald-Winstein식의 m값을 구하고 분광용매화 관계식의 파라메타들을 결정하였다. 이들 용매효과 파라메타와 활성화 파라메타들을 종합하여 볼때 Pseudo saccharinechloride의 가용매 분해반응은 SN2 반응으로 진행됨을 알았다.

The pseudo-first order rate constants have been obtained for the solvolysis of pseudo-saccharinechloride in MeOH-H2O, EtOH-H2O, MeOH-MeCN and MeOH-(Me)2CO solvents mixtures at various temperatures. Values of n and m in the Kivinen and Grunwald-Winstein plots, respectively, have been determined and the Taft's solvatochromic parameters were obtained; based on these solvent effect parameters as well as on the activation parameters it was concluded that reaction proceeds via an SN2 mechanism.

296 - 300
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