Hydrochloric Acid → HCID 71263635, compound

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Reaction Steps

A solution of 5-cyclopropyl-6-(N-(3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methylsulfonamido)-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide (140 mg, 0.22 mmol) and 1N aqueous HCl (2 mL) in anhydrous THF (10 mL) was treated with polymer-supported benzeneboronic acid (5000 mg) and stirred at room temperature for 24 hours. The mixture was partitioned between ethyl acetate and water. The organic layer was separated, dried over sodium sulfate, filtered, concentrated to dryness, and purified by reverse phase HPLC to afford 4-(N-(5-cyclopropyl-2-(4-fluorophenyl)-3-(methylcarbamoyl)benzofuran-6-yl)methylsulfonamido)-2-fluorophenylboronic acid (50 mg, 0.092 mmol, 42% yield) as a white solid. 1H NMR (300 MHz, METHANOL-d4) δ 7.96 (dd, 2H), 7.83 (s, 1H), 7.45-7.15 (m, 6H), 3.43 (s, 3H), 2.96 (s, 3H), 2.12 (m, 1H), 1.01-0.52 (m, 4H). LCMS (m/z, ES+)=541 (M+H+)

Provenance & Evidence