(509b) Kinetic Study of Dichlorocyclopropanation of 1,7-Octadiene under the Influence of Ultrasound Assisted Phase-Transfer Catalysis Condition

The kinetics for dichlorocyclopropanation of 1,7-octadiene with an excess of chloroform has been studied under phase-transfer catalysts and ultrasound irradiation conditions using aqueous sodium hydroxide as the base. The reaction was carried out at 30°C and a pseudo-first order rate is used to describe the reaction rate at high alkaline concentration (> 50 wt %). Kinetics of the reaction including the effects of the reaction conditions on the conversion of 1,7-octadiene was investigated. A rational explanation was made for a peculiar phenomenon that the conversion of 1,7-octadiene was increased and then decreased with an increase in the amount of sodium hydroxide and the amount of phase-transfer catalyst, benzyltriethylammonium chloride (BTEAC).