Patent ID: 6534682
Filing Date: 2003-03-18
Classification: C07C,Y02P

Abstract:
A process for the generation of N(CF3)2 anions comprising reacting a sulphonamide of formulaRFSO2N(CF3)2 whereinRF=F or CnF2n+1, and n=1-4, with a metal fluoride of formulaMFx whereinM=Na, K, Rb, Cs, Ag, Cu or Hg, and x=1 or 2, with the proviso that x=1, if M is Na, K, Rb, Cs or Ag, and that x=2, if M is Cu or Hg, forming an imino salt of formulaMx+[N(CF3)2]x and the corresponding sulphonylfluoride of formulaRFSO2F orreacting a sulphondiamide of formula(CF3)2N(SO2CF2)mSO2N(CF3)2 whereinm=0 or 1, with a metal fluoride of formulaMFx forming an imino saltMx+[N(CF3)2]x and the corresponding sulphonyldifluoride of formulaF(SO2CF2)m SO2F orreacting a N,N-Bis(trifluoromethyl)perfluoroacylamide of formulaRFCON(CF3)2 with a metal fluoride of formulaMFx forming an imino saltâ€ƒMx+[N(CF3)2]x and a salt of the formulaRFCF2Oâˆ’M+.