신남산 유도체 V. cinnamenylisophorone 유도체의 가수분해 반응에 대한 메카니즘과 그 반응속도론적 연구

• 영문명: Cinnamic Acid Derivatives V. the Kinetics and Mechanism of the Hydrolysis of Cinnamenylisophorone Derivatives
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 이기창(Lee Ki Chang) 윤철훈(Yun Cheol Hun) 류정욱(Ryu Jung Wook) 이석우(Lee Seok Woo) 정덕채(Jung Duk Chai)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제8권 제2호, 161~167쪽, 전체 7쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 1991.11.30

영문 초록

The kinetics of hydrolysis of cinnamenylisophorone derivatives (p-H, p-Br, p-Cl. p-OCH₃) was investigated using ultraviolet spectrophotometry in 20%(v/v) dioxane-H₂O at 25℃. A rate equation which can be applied over wide pH range(pH 1.0~13.0) was obtained. In order to investigate the substituent effects on cinnamenylisophorone derivatives, Hammett constant was plotted. As the result, the rate of hydrolysis of cinnamenylisophorone derivatives was facilitated by electron donating group. Final products of the hydrolysis were benzaldehyde and isophorone. From the measurement of reaction rate constant according to pH changes, substituent effect, and final products, it was found that the hydrolysis of cinnamenylisophorone derivatives was initiated by the neutral H₂O molecule which does not dissociated at below pH 9.0, and in the range of pH 9.0~11.0 this reaction occurs by H₂O or hydroxide ion competitively, but proceeded by the hydroxide ion above pH 11.0. On the basis of this kinetic study, the reaction mechanism of the hydrolysis of cinnamenylisophorone derivatives was proposed.

목차

ABSTRACT

I. 서론

II. 실험

III. 결과 및 고찰

IV. 결론

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