Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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The Kinetics and Mechanism of Nucleophilic Addition of Ethylmercaptan to Ethylcinnamate

Ethylcinnamate에 대한 Ethylmercaptan의 親核性 添加反應에 관한 연구

  • 권기성 (충남대학교 문리과대학 화학과) ;
  • 김태린 (고려대학교 이공대학 화학과)
  • Published : 19691200
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Abstract

The rate constants for the addition reaction of ethylmercaptan to ethylcinnamate has been measured by iodometry and for the proposed reaction mechanism a rate equation which can be applied over wide pH range was derived. From this rate equation, one may conclude that the reaction is started by addition of ethylmercaptan molecule below pH 3. However, above pH 7, this addition reaction is proceeded by the ethylmercaptide ion. At pH 3-7, the complex addition reaction mechanism can also be revealed by this rate equation.

Ethylcinnamate에 대한 ethylmercaptan의 첨가반응속도상수를 idodometry로 측정하여 넓은 pH범위에서 잘 맞는 속도식을 구하였다. 이 식에 의하면 pH3이하에서는 ethymercaptan분자가 첨가하여 pH7이상에서는 ethylmercaptide ion이 첨가함을 알 수있고 pH3-7사이에서 일어나는 복잡한 첨가반응 메카니즘도 이식으로 잘 설명될 수 있음을 알았다.

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