Patent ID: 6943263

Claim:
A process for the preparation of a bis(trifluoromethyl)imido salt of the general formula (I) M a+ [(N(CF 3 ) 2 ) − ] a (I) wherein M a+ is a monovalent or divalent cation, and a=1 or 2, comprising reacting at least one trifluoromethanesulfonate of the general formula (II) [M a+ ][(OSO 2 CF 3 ) − ] a (II) wherein M a+ is a monovalent or divalent cation, and a=1 or2, with bis(trifluoromethyl)imidorubidium in solution, and the resultant bis(trifluoromethyl)imido salt of the general formula (I) is, if desired, purified and/or isolated.