PREPARATION OF HALOFLUOROBENZENES

摘要

Chlorofluorobenzenes and difluorobenzenes are prepared by reacting a dichlorobenzene with an effective amount of KF or CsF, in a polar aprotic solvent, at an elevated temperature, and under substantially anhydrous conditions. The product can be removed as it is formed or the reaction may be run at the autogenous pressures generated by the reaction mixture in a sealed reactor. 37,135-F