76339-61-2Relevant articles and documents
Synthesis and Reactions of Arylcarbonic Fluorosulfonic Anhydrides
Effenberger, Franz,Huthmacher, Klaus,Keil, Michael
, p. 1967 - 1971 (2007/10/02)
In dichloromethane at 0 deg C, the acyl fluorides 3 insert sulfur trioxide to form the thermolabile acylcarbonic fluorosulfonic anhydrides 4 in good yield.Acylation of non-activated arenes with the anhydrides 4 is impossible since they decompose upon warming into constituent compounds; with the SO3 thus liberated, diarylsulfones 6 are formed.