The fluorination reaction involving a β-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 ultraso...The fluorination reaction involving a β-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-β-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.展开更多
In this communication,we report four component condensations of acetophenone,arylaldehydes,arylthiol,and malononitrile in the presence of Triton X-100（5 mol%） aqueous micelles.This reaction led to the formation of 4...In this communication,we report four component condensations of acetophenone,arylaldehydes,arylthiol,and malononitrile in the presence of Triton X-100（5 mol%） aqueous micelles.This reaction led to the formation of 4,6-diaryl-2-（arylthio）nicotinonitrile new derivatives in good yields.The FT-IR,^19F NMR,^1H NMR,^13C NMR spectra and elemental analysis confirm the structure of compounds.展开更多
A green and convenient approach for the synthesis of a series of 5,5＇-（arylmethylene）bis（4-hydroxythiazole-2（3H）-one） by the reaction of aryl aldehydes,monochloroacetic acid and ammonium thiocyanate in water/tr...A green and convenient approach for the synthesis of a series of 5,5＇-（arylmethylene）bis（4-hydroxythiazole-2（3H）-one） by the reaction of aryl aldehydes,monochloroacetic acid and ammonium thiocyanate in water/trifluoroethanol（TFE）（1：1） under ultrasound irradiation at room temperature is described.This method provides several advantages such as environmental friendliness,shorter time,excellent yields,and simple work-up procedure.展开更多
文摘The fluorination reaction involving a β-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-β-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.
基金financially supported by the Payame Noor University,Iran
文摘In this communication,we report four component condensations of acetophenone,arylaldehydes,arylthiol,and malononitrile in the presence of Triton X-100（5 mol%） aqueous micelles.This reaction led to the formation of 4,6-diaryl-2-（arylthio）nicotinonitrile new derivatives in good yields.The FT-IR,^19F NMR,^1H NMR,^13C NMR spectra and elemental analysis confirm the structure of compounds.
文摘A green and convenient approach for the synthesis of a series of 5,5＇-（arylmethylene）bis（4-hydroxythiazole-2（3H）-one） by the reaction of aryl aldehydes,monochloroacetic acid and ammonium thiocyanate in water/trifluoroethanol（TFE）（1：1） under ultrasound irradiation at room temperature is described.This method provides several advantages such as environmental friendliness,shorter time,excellent yields,and simple work-up procedure.
