10-Chloro-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydroimidazo[1,2-d]pyrido[4,3-f][1,4]oxazepine (85.0 mg, 0.257 mmol) dissolved in Acetonitrile (2 mL, 50 mmol) and Water (2 mL, 100 mmol) with dissolved Potassium acetate (85.5 mg, 0.871 mmol). Degas by bubbling nitrogen for 5 min. 2-Fluoropyridine-5-boronic acid (47.1 mg, 0.334 mmol) was added, then Tetrakis(triphenylphosphine)palladium(0) (4.0E1 mg, 0.035 mmol). The reaction was microwaved at 145 C 35 min, cooled to RT, and extracted with ethyl acetate. Combined organics were concentrated to give fluoro intermediate, 10-(6-fluoropyridin-3-yl)-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydroimidazo[1,2-d]pyrido[4,3-f][1,4]oxazepine, which was dissolved in 1,2-Dimethoxyethane (3.00 mL, 28.9 mmol). 10% aqueous HCl (3 mL) was added. The reaction was allowed to stir and heat at 80° C. overnight. The reaction was allowed to cool to room temperature and concentrated under reduced pressure to give 306, analyzed by rHPLC. MS: (ESI+)=390.1
