A mixture of N-(7-hydroxyisoquinolin-3-yl)cyclopropanecarboxamide (53 mg, 0.23 mmol), ethyl 2-bromoisobutyrate (69 uL, 0.47 mmol), cesium carbonate (166.8 mg, 0.5119 mmol), and 1,4-dioxane (2.0 mL, 26 mmol) was heated in a sealed vial at 100° C. for 22 hours. The reaction mixture was poured into ethyl acetate, washed with water and brine, dried over MgSO4, filtered, and evaporated in vacuo to yield 63.4 mg (80%) of ethyl 2-(3-(cyclopropanecarboxamido)isoquinolin-7-yloxy)-2-methylpropanoate which was carried forward without purification. LCMS (ESI): M+H=343.2.
