Furfurylidene acetophenone유도체에 대한 Thiourea의 친핵성 첨가반응 메카니즘과 그 반응속도론적 연구

• 영문명: The Kinetics and Mechanism of the Nucleophilic Addition of Thiourea for Furfurylidene Acetophenone derivatives
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 이기창 목갑영 오세영 류정욱
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제14권 제1호, 27~32쪽, 전체 6쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 1997.05.30

영문 초록

Furfurylidene acetophenone derivatives were synthesis, it was measured that nucleophilic addition made use of UV at a wide pH 1.0${\sim}$ 수식 이미지13.0 range in 30% dioxane-$H_2O$ 수식 이미지 solution, 25$^{\circ}C$ 수식 이미지. On the basis of general base catalysis, substitutent effect, confirmation of nucleophilic addition products, it was measured the reaction rate of furfurylidene acetophenone derivatives for the pH change. It may be concluded that a part was unrelated to pH and another part was in proportion to concentration of hydroxide ion: Above pH 10.0. sulfide anion adds to the double bond (Michael type addition), a part having no concern with pH, addition reaction to double bond is initiated by addition of neutral thiourea molecule. From the result of measurement the reaction rate, nucleophilic addition of furfurylidene acetophenone derivatives confirmed to the irreversible first order. Through measurement the substituent effect. It found that reaction rate was accelerated by electron attracting group. On the basis of these findings, nucleophilic addition of thiourea for the furfurylidene acetophenone derivative was proposed a fitting mechanisms.