Abstract Reactions of N-fluorobenzenesulfonimide with methylbenzenes, phenols, and phenol ethers were studied under solvent-free conditions. The rate constant ratio for the reactions with mesitylene and durene indicates polar mechanism of the process. Solvent- free fluorination of aromatic compounds with N-fluorobenzenesulfonimide in some cases is more selective than reactions with other NF reagents in a solvent.
