A mixture of 2-[2-(cyclopropylmethoxy)-5-methylsulfonylphenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (33 mg, 0.09 mmol), 4-bromo-2-chloro-6-methylfuro[2,3-c]pyridin-7-one (25 mg, 0.09 mmol), K3PO4 (50 mg, 0.24 mmol), Pd(dppf)Cl2 (7 mg, 10%) in dioxane/H2O (700 uL/70 uL) was bubbled with nitrogen for 5 min. The sealed vial was stirred at 70° C. for 90 min. The reaction mixture was filtered through a short plug of celite; the celite plug was washed with EtOAc (10 mL). The filtrate was washed with water and brine; the organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to afford a tan residue. The resulting residue was purified by prep-HPLC to afford the title compound (27 mg, 69%) as an off-white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 0.23-0.34 (m, 2H) 0.44-0.55 (m, 2H) 1.00-1.13 (m, 1H) 3.19-3.24 (m, 3H) 3.61 (s, 3H) 3.94-4.05 (m, 2H) 6.82-6.89 (m, 1H) 7.10-7.16 (m, 1H) 7.26-7.35 (m, 1H) 7.70-7.78 (m, 1H) 7.87-7.94 (m, 1H). LCMS (M+H)+=409.
