Poly(β-alkoxy,naphthalene vinylene) (PAONV) was synthesized from β-naphthol and H(CH2)mBr(m=4,6,8,9) under ultrasonic irradiation.The influences of reaction conditions on the yield of intermediates and polymers were...Poly(β-alkoxy,naphthalene vinylene) (PAONV) was synthesized from β-naphthol and H(CH2)mBr(m=4,6,8,9) under ultrasonic irradiation.The influences of reaction conditions on the yield of intermediates and polymers were studied.The structure of intermediates and polymers were characterized with IR and 1H NMR spectroscopy.These results showed that the total yield of PAONV under ultrasonic irradiation was 70.0%—74.4%,higher than that under reflux stirring.The reaction time was shortened from 35 h to 20 h.The yield of etherification in the C2H5ONa system was higher than that in the NaOH system.The dimetyl sufoxide as a strong polar solvent favored the yield of dehydrochlorination.The best reaction times of etherification, chloromethylation, dehydrochlorination were 5 h,5 h,10 h,respectively.展开更多
采用超声波法在碱性条件下用取代苯酚与氯乙酸合成取代苯氧乙酸,并测试其抑菌活性.共合成了3个取代苯氧乙酸衍生物,即对氯苯氧乙酸,邻氯苯氧乙酸,对溴苯氧乙酸,用IR,^1 H NMR,UV及元素分析确证了其结构.同时选取大肠杆菌、沙...采用超声波法在碱性条件下用取代苯酚与氯乙酸合成取代苯氧乙酸,并测试其抑菌活性.共合成了3个取代苯氧乙酸衍生物,即对氯苯氧乙酸,邻氯苯氧乙酸,对溴苯氧乙酸,用IR,^1 H NMR,UV及元素分析确证了其结构.同时选取大肠杆菌、沙门氏菌、枯草芽孢杆菌和金黄色葡萄球菌等四种细菌对所合成的取代苯氧乙酸类化合物测试其最小抑菌浓度(MIC).抑茵活性表明:对氯苯氧乙酸和对溴苯氧乙酸的抑菌谱较广,而邻氯苯氧乙酸的抑菌谱较窄.展开更多
文摘Poly(β-alkoxy,naphthalene vinylene) (PAONV) was synthesized from β-naphthol and H(CH2)mBr(m=4,6,8,9) under ultrasonic irradiation.The influences of reaction conditions on the yield of intermediates and polymers were studied.The structure of intermediates and polymers were characterized with IR and 1H NMR spectroscopy.These results showed that the total yield of PAONV under ultrasonic irradiation was 70.0%—74.4%,higher than that under reflux stirring.The reaction time was shortened from 35 h to 20 h.The yield of etherification in the C2H5ONa system was higher than that in the NaOH system.The dimetyl sufoxide as a strong polar solvent favored the yield of dehydrochlorination.The best reaction times of etherification, chloromethylation, dehydrochlorination were 5 h,5 h,10 h,respectively.
文摘采用超声波法在碱性条件下用取代苯酚与氯乙酸合成取代苯氧乙酸,并测试其抑菌活性.共合成了3个取代苯氧乙酸衍生物,即对氯苯氧乙酸,邻氯苯氧乙酸,对溴苯氧乙酸,用IR,^1 H NMR,UV及元素分析确证了其结构.同时选取大肠杆菌、沙门氏菌、枯草芽孢杆菌和金黄色葡萄球菌等四种细菌对所合成的取代苯氧乙酸类化合物测试其最小抑菌浓度(MIC).抑茵活性表明:对氯苯氧乙酸和对溴苯氧乙酸的抑菌谱较广,而邻氯苯氧乙酸的抑菌谱较窄.