15.0 g of 2-(3-Bromophenyl)-4,6-diphenyl-l,3,5-
triazine (32.4 mmol), 12.3 g of bis(pinacolato)diboron (48.6
mmol), 529 mg of Pd(dppf)Cl2.CH2Cl2 (0.647 mmol), 9.53
g of potassium acetate (97.1 mmol) and 323 ml of dioxane
were put into a 1-neck round flask and reacted under reflux
at 90° C. for 12 hours. After completion of the reaction, the solvent was removed under reduced pressure. The produced
solid was dissolved in dichloromethane and then filtered
through a Celite filter and washed with dichloromethane.
The solvent was removed under reduced pressure and the
resultant compound was crystallized with methanol to obtain
16.0 g of solid compound (2,4-Diphenyl-6-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-1,3,5-triazine) (yield: 96.8%).