A mixture of compound 2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoquinolin-1-one (4.1 g, 14.5 mmol), 2-bromo-4-methylsulfonyl-1-fluorobenzene (3.5 g, 13.8 mmol) prepared in a similar manner to Example 79 steps 1-2, CsF (6.3 g, 41.3 mmol), and Pd(dppf)Cl2 (1.0 g, 1.38 mmol) in DME (70 mL) and MeOH (35 ml) was stirred at 70° C. for 12 h under N2. The mixture was concentrated and the residue was purified by column chromatography on silica gel (PE: EA=2:1-0:1) to give the title compound (3.4 g, 74.4%) as a red solid. LCMS (M+H)+=331.9 (M+1)+
