An efficient fluorination of β-ketosulfones promoted by a room-temperature ionic liquid at ambient conditions under ultrasound irradiation using Selectfluor™ F-TEDA-BF4
摘要:
The fluorination reaction involving a beta-ketosulfones by Selectfluor (TM) was efficiently promoted by the ionic liquid, [Hbim]BF4 (IL) as a reaction medium with methanol as co-solvent at room temperature under ultrasonic irradiation to afford the corresponding mono and difluoro-beta-ketosulfones in excellent yields. The advantages of this method include among others the use of a recyclable, non-volatile ionic liquid, which promotes this protocol under room temperature without the requirement of any added catalyst under ultrasonic irradiation. (C) 2010 Mohammad Reza Poor Heravi. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.