Potassium Phosphate, Tribasic → US10023592, Example 72

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A mixture of 4-bromo-2-methyl-6-(6-methylpyridin-3-yl)isoquinolin-1-one (135 mg, 0.41 mmol), [3-(ethylsulfonylamino)phenyl]boronic acid (141 mg, 0.62 mmol), Pd(dppf)Cl2 (35 mg, 0.05 mmol) and aqueous 1M K3PO4 (1.03 mL) in dioxane (6 mL) was microwaved at 100° C. for 1 h. Purification by silica gel chromatography (PE:EA=3:1 to 1:2) followed by preparative HPLC gave the title compound (25 mg, 14.1%) as a white solid. 1H NMR (CDCl3, 400 MHz) δ 8.74 (d, J=2.0 Hz, 1H), 8.41 (d, J=8.4 Hz, 1H), 7.96 (d, J=8.0 Hz, 1H), 7.86 (d, J=8.8 Hz, 1H), 7.75 (s, 1H), 7.58 (s, 1H), 7.47 (t, J=8.0 Hz, 1H), 7.39 (s, 1H), 7.35 (d, J=8.4 Hz, 1H), 7.30 (d, J=8.4 Hz, 1H), 7.24 (d, J=8.4 Hz, 1H), 3.59 (s, 3H), 3.59 (s, 3H), 3.15 (q, J=7.2 Hz, 2H), 1.19 (t, J=7.2 Hz, 3H). LCMS: 434.1 (M+H)+.

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