The catalytic behaviours of Ruthenium comlex RhC12(TPPTS) 3 as catalyst precursor for the selective hydrogenation of Carbon-crbon double bond in methylvinylketone were studied in biphasic system (aqueous/ cyclohexane ...The catalytic behaviours of Ruthenium comlex RhC12(TPPTS) 3 as catalyst precursor for the selective hydrogenation of Carbon-crbon double bond in methylvinylketone were studied in biphasic system (aqueous/ cyclohexane ). When the hydrogenation was carried out under the following condition: [Ru] = 2 × 10-3mol/L [TPPTS]/[Ru]=3, 2. 0MPa, H2O: 10mL, cyclohexane: 5mL, subettate: 25mmol,stiring speed: 600r/min, the conversion reached 70.13 % and the selectivity for the hydrosenation of C=C was 100%. The effect of molar raio of TPPTS to Ru on the activity was remarkable. When [TPPTS]/[Ru] increased to 15, the conversion raised to 100% and the selectivit was kept unchanged.展开更多
1-氯-3-丁烯-2-酮(1-chloro-3-buten-2-one,CBO)是致癌性环境污染物1,3-丁二烯的一种体外代谢产物,具有细胞毒性和遗传毒性,易形成DNA加成产物以及谷胱甘肽偶联产物.预计CBO-谷胱甘肽偶联产物在肾脏被代谢为CBO-N-乙酰半胱氨酸(N-acetyl...1-氯-3-丁烯-2-酮(1-chloro-3-buten-2-one,CBO)是致癌性环境污染物1,3-丁二烯的一种体外代谢产物,具有细胞毒性和遗传毒性,易形成DNA加成产物以及谷胱甘肽偶联产物.预计CBO-谷胱甘肽偶联产物在肾脏被代谢为CBO-N-乙酰半胱氨酸(N-acetylcysteine,NAC)偶联产物,最终随尿排出体外.因此,CBO-NAC偶联产物能够作为CBO生物标志物.然而,CBO与NAC的反应尚未见报道.研究了CBO与NAC在体外生理条件下(pH=7.4,37℃)的反应,观察到两种产物.通过一维和二维核磁共振光谱(nuclear magnetic resonance spectroscopy,NMR)确定两种产物的结构分别是1-氯-4-(N-乙酰-S-半胱氨酸基)-2-丁酮和1,4-双(N-乙酰-S-半胱氨酸基)-2-丁酮,后者是一种新化合物.这些产物的识别为后续研究打好了基础.展开更多
文摘The catalytic behaviours of Ruthenium comlex RhC12(TPPTS) 3 as catalyst precursor for the selective hydrogenation of Carbon-crbon double bond in methylvinylketone were studied in biphasic system (aqueous/ cyclohexane ). When the hydrogenation was carried out under the following condition: [Ru] = 2 × 10-3mol/L [TPPTS]/[Ru]=3, 2. 0MPa, H2O: 10mL, cyclohexane: 5mL, subettate: 25mmol,stiring speed: 600r/min, the conversion reached 70.13 % and the selectivity for the hydrosenation of C=C was 100%. The effect of molar raio of TPPTS to Ru on the activity was remarkable. When [TPPTS]/[Ru] increased to 15, the conversion raised to 100% and the selectivit was kept unchanged.
文摘1-氯-3-丁烯-2-酮(1-chloro-3-buten-2-one,CBO)是致癌性环境污染物1,3-丁二烯的一种体外代谢产物,具有细胞毒性和遗传毒性,易形成DNA加成产物以及谷胱甘肽偶联产物.预计CBO-谷胱甘肽偶联产物在肾脏被代谢为CBO-N-乙酰半胱氨酸(N-acetylcysteine,NAC)偶联产物,最终随尿排出体外.因此,CBO-NAC偶联产物能够作为CBO生物标志物.然而,CBO与NAC的反应尚未见报道.研究了CBO与NAC在体外生理条件下(pH=7.4,37℃)的反应,观察到两种产物.通过一维和二维核磁共振光谱(nuclear magnetic resonance spectroscopy,NMR)确定两种产物的结构分别是1-氯-4-(N-乙酰-S-半胱氨酸基)-2-丁酮和1,4-双(N-乙酰-S-半胱氨酸基)-2-丁酮,后者是一种新化合物.这些产物的识别为后续研究打好了基础.