A mixed solution of 10.0 g of 1-bromo-7-t-butyl-3-(4-chlorophenyl)pyrene, 5.86 g of 9,9-dimethylfluoren-2-yl boronic acid, 0.016 g of bis(triphenylphosphine)palladium dichloride, 33 ml of an aqueous 1.5M sodium carbonate solution and 112 ml of 1,2-dimethoxyethane was heated and stirred for 3 hours under a nitrogen stream and under refluxing. After the mixture was cooled to room temperature, 223 ml of water was added, and this was extracted with 236 ml of toluene. The organic layer was washed with 640 ml of an aqueous sodium chloride solution two times, dried with magnesium sulfate, and evaporated, 50 ml of 2-propanol was added, and the mixture was stirred for 2 hours, and filtered. After the mixture was vacuum dried, 9.5 g of 1-(4-chlorophenyl)-3-(9,9-dimethylfluoren-2-yl)-7-t-butylpyrene was obtained.
