کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1266864 | 972305 | 2012 | 5 صفحه PDF | دانلود رایگان |
The kinetics for dichlorocyclopropanation of styrene with an excess of chloroform were studied under phase-transfer catalysis and ultrasound irradiation conditions using aqueous sodium hydroxide as the base and benzyltriethylammonium bromide as a catalyst. The reaction was carried out at 35 °C under pseudo-first order conditions by keeping aqueous sodium hydroxide and chloroform in excess and was monitored by gas chromatography (GC). The effects of agitation speed, quaternary ammonium salts, amount of catalyst, amount of sodium hydroxide and temperature on the kinetics of the conversion were investigated.
► The kinetics for dichlorocyclopropanation of styrene.
► Under phase-transfer catalysis and ultrasound irradiation conditions.
► The factors affecting the overall reaction rate on the kinetics of the conversion were investigated.
► The apparent reaction rates were observed to obey the pseudo-first order kinetics with respect to the styrene.
Journal: Ultrasonics Sonochemistry - Volume 19, Issue 6, November 2012, Pages 1139–1143