DOI QR코드

DOI QR Code

Kinetics and Mechanism of Nucleophilic Addition of Sodium Thiophenoxide to ${\alpha}-Phenyl-N-iso-Propylnitrone$ derivatives

(${\alpha}-Phenyl-N-iso-propylnitrone$유도체에 대한 Sodium Thiophenoxide의 친핵성 첨가반응 메카니즘과 그의 반응 속도론적 연구

  • 이광일 (경기대학교 이과대학 화학과) ;
  • 김영주 (경기대학교 이과대학 화학과) ;
  • 곽천근 (경기대학교 이과대학 화학과) ;
  • 장병만 (경기대학교 이과대학 화학과) ;
  • 이기창 (명지대학교 공과대학 화학공학과)
  • Published : 1995.11.30

Abstract

The rate constant of Nucleophilic addition of sodium thiophenoxide to nitrone were determined by UV Spectrophotometry and a rate equation which can be applied over wide pH range was obtained. Base on the rate equation, general base effect, substituent effect and final product, plausible mechanism of addition reaction have been proposed. Blow pH 3.0, the reaction was initiated of thiophenol, and in the range of pH $3.0{\sim}10.0$, proceeded by the competitive addition of thiophenol and thiophenoxide anion. Above the pH 10.0, the reaction proceeded through the addition of a thiophenoxide anion.

Keywords