A suspension of 2-bromo-9,10-bis(2-naphthalenyl)anthracene (5.00 g, 9.81 mmol) and pinacol ester of bis(boronic acid) (2.75 g, 10.8 mmol) was formed with potassium acetate (2.89 g, 29.4 mmol) in dioxane (50 mL). To this suspension was added palladium (diphenylphosphinoferrocene) chloride (0.24 g, 0.3 mmol). The reaction mixture was stirred at 80 °C for 6 h and subsequently cooled to room temperature. After completion of the reaction, the reaction mixture was diluted with 50 mL of water and extracted with dichloromethane (3 x 50 mL). The organic phases were combined, dried with magnesium sulfate and subsequently concentrated under reduced pressure. The crude product was washed with ethanol and dried under vacuum to afford the target compound 2-(9,10-bis(naphthalen-2-yl)anthracen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (5.46 g, 92% yield). Mass spectral analysis showed [M + H]+ = 557.
