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ETABr 용액내에서 P-Nitrophenyldiphenylphosphinate의 탈인산화반응에 미치는 Benzimidazole의 촉매효과 KCI 등재

Dephosphpoylation of P-Nitrophenyldiphenylphosphinate by Benzimidazole Catalyzed with Ethyl tri-n-octyl Ammonium Bromide(ETABr)

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

The phase transfer catalysis(PTC) reagent, ethyl tri-octyl ammonium bromide(ETABr), strongly catalyzes the reaction of p-nitrophenyl diphenyl phosphinate(p-NPDPIN) with benzimidazole(BI) and its anion(BI⊖). In ETABr solutions, the dephosphorylation reactions exhibit higher first order kinetics with respect to the nucleophile, BI, and ETABr, suggesting that reactions are occuring in small aggregates of the three species including the substrate(p-NPDPIN), whereas the reaction of p-NPDPIN with OH⊖ is not catalyzed by ETABr. This behavior for the drastic rate-enhancement of the dephosphorylation is referred as 'aggregation complex model' for reaction of hydrophobic organic phosphinates with benzimidazole(BI) in hydrophobic quarternary ammonium salt(ETABr) solutions.

저자
  • 김정배(계명대학교 환경대학) | Jeung Bea Kim Corresponding Author
  • 김학윤(계명대학교 환경대학) | Hak Yoon Kim