Study of new synthesized ferrocenyl ionic liquids in oxidative esterification reaction

ABSTRACTIn this work, novel ferrocene-based ionic liquids, 1-(ferrocenylbutyl)-4-(3-methylimidazolium) Azide and 1-(ferrocenylbutyl)-4-(3-methylimidazolium) Tetrafluoroborate, were synthesized and utilized in the oxidation esterification reaction of aldehydes in the present of different reagents such as NaN3, (K2CO3 and NCS), (KI and KCN), (I2 and K2CO3), (KMnO4). The results were compared with that of [BMIM][X] (X˭Cl, BF4) under the same conditions. As expected, ferrocene-based ionic liquids showed better results; It seems, iron nuclear may play a similar role such as iron catalysts in these novel ionic liquids and can facilitated the oxidation esterification reaction with improve the yield and decrease the reaction time.