In the presence of amine-HF complexes, iodotoluene difluoride reacted with unsaturated alcohols and carboxylic acids to give cyclic fluoroethers and fluorolactones, respectively. (C) 2000 Elsevier Science S.A. All rights reserved.
Activation of the hypervalent fluoroiodane reagent by hydrogen bonding to hexafluoroisopropanol
作者:Harsimran K. Minhas、William Riley、Alison M. Stuart、Martyna Urbonaite
DOI:10.1039/c8ob02236d
日期:——
Hexafluoroisopropan-2-ol (HFIP) is an excellent solvent for promoting fluorinations with the hypervalent fluoroiodane reagent 1 and crucially, it removes the need for transition metals or TREAT-HF activators. The fluoroiodane reagent 1 was used in HFIP to monofluorinate 1,3-ketoesters and to fluorocyclise unsaturated carboxylicacids in excellent yields under mild reaction conditions.