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

[摘要] 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-¥â-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.

[学科分类] 化学（综合）