Effenberger, FranzHuthmacher, KlausKeil, Michael2009-07-272016-03-312009-07-272016-03-311981315372346http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-42738http://elib.uni-stuttgart.de/handle/11682/1074http://dx.doi.org/10.18419/opus-1057In dichloromethane at 0°C, the acyl fluorides 3 insert sulfur trioxide to form the thermolabile arylcarbonic fluorosulfonic anhydrides 4 in good yield. Acylation of non-activated arenes with the anhydrides 4 is impossible since they decompose upon warming into the constituent compounds; with the SO3 thus liberated, diarylsulfones 6 are formed.deinfo:eu-repo/semantics/openAccessElektrophile Substitution , Acylierung540article2013-02-15