Conclusion Conditions have been optimized to form the greatest amount of difluorobenze product. Under the following conditions: temperature,-78" C; fluorination schedule, 10/20/30; and fluorine to substrate ratio, 3; a maximum yield of 19.7% monofluorinated product was obtained. Despite the relatively high yield of desired products, there was no meta isomer found; however, measurable amounts of the meta isomer were observed in the ...
