Improvement of the Friedel–Crafts benzoylation by using bismuth trifluoromethanesulfonate in 1-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid under microwave irradiation
作者:Phuong Hoang Tran、Ngoc Bich Le Do、Thach Ngoc Le
DOI:10.1016/j.tetlet.2013.10.155
日期:2014.1
Bismuth trifluoromethanesulfonate (bismuthtriflate) catalyzed the Friedel–Crafts benzoylation of activated aromatic compounds when dissolved in 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM]OTf) ionicliquid. Immobilization of bismuthtriflate (5 mol %) in [BMIM]OTf allowed the synthesis of aryl ketones in good to excellent yields with short reaction times under microwave irradiation
Microwave-Assisted Facile and Rapid Friedel–Crafts Benzoylation of Arenes Catalyzed by Bismuth Trifluoromethanesulfonate
作者:Phuong Hoang Tran、Poul Erik Hansen、Thuy Thanh Pham、Vy Thanh Huynh、Vy Hieu Huynh、Thao Du Thi Tran、Thanh Van Huynh、Thach Ngoc Le
DOI:10.1080/00397911.2014.906042
日期:2014.10.18
investigated in Friedel–Craftsbenzoylation under microwave irradiation. Friedel–Craftsbenzoylation with benzoyl chloride of a variety of arenes containing electron-rich and electron-poor rings using bismuth triflate under microwave irradiation is described. This method allows the preparation of aryl ketones under solventless conditions in good to excellent yields and short reaction time. Bismuth triflate
Erbium trifluoromethanesulfonate catalyzed Friedel–Crafts acylation using aromatic carboxylic acids as acylating agents under monomode-microwave irradiation
作者:Phuong Hoang Tran、Poul Erik Hansen、Hai Truong Nguyen、Thach Ngoc Le
DOI:10.1016/j.tetlet.2014.12.038
日期:2015.1
Erbium trifluoromethanesulfonate is found to be a good catalyst for the Friedel–Craftsacylation of arenes containing electron-donating substituents using aromatic carboxylicacids as the acylating agents under microwave irradiation. An effective, rapid and waste-free method allows the preparation of a wide range of aryl ketones in good yields and in short reaction times with minimum amounts of waste