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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 12, Number 4
JKCSEZ 12(4)
August 20, 1968 

The Kinetics and Mechanism of Nucleophilic Addition of Mercaptan to a β-Nitrostyrene in Acidic Media (Ⅱ) Ethylmercaptan and Isopropylmercaptan

산성용매 속에서의 β-Nitrostyrene에 대한 친핵성 첨가반응에 관한 연구 (Ⅱ) Ethylmercaptan과 Isopropylmercaptan과 반응
Tae-Rin Kim, Young-Sang Choi

김태린, 최영상
Nucleophile의 친핵성첨가반응성을 정량적으로 연구하고자 3,4-methylenedioxy- -nitrstyrene에 대해 우선 ethylmercaptan과 isopropylmercaptan을 써서 그외 첨가반응속도상수를 측정한 결과 ethylmercaptide와 isopropylmercaptide ion에 대해 각각 6.82X10(7)M-2, sec-1, and 2.86X10(7)M-2,sec-1를 얻었으며 염기성 뿐만 아니라 산성 촉매속에서도 그의 반응메카니즘을 잘 설명할 수 있는 속도식도 구하였다.

In order to attempt the quantitative correlation of nucleophilic addition(not nucleopbilic substitution) reactivity of nucleophile, the addition constants of ethyl and isopropyl mercaptan to 3,4-methylenedioxy-β-nitrostyrene were determined and found to be 6.82×107 and 2.86×107 M-2·sec-1 respectively. From the rate equation obtained, the addition mechanism at basic media especially the complex addition mechanism at acidic media which has not been revealed can also be fully explained.

170 - 176
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