Potassium Iodide → 8-Benzyl-2-(furan-2-ylmethyl)-6-phenyl-3-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)oxy)imidazo[1,2-a]pyrazine

Participants

Reaction Steps

To a solution of 8-benzyl-2-(furan-2-ylmethyl)-6-phenylimidazo[1,2-a]pyrazin-3(7H)-one (50 mg, 0.13 mmol) was added 2-(4-(bromomethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (47 mg, 0.16 mmol), potassium carbonate (27 mg, 0.20 mmol) and potassium iodide (33 mg, 0.20 mmol). The reaction mixture was stirred at room temperature for 1 h and heat to 40° C. until HPLC shows the completion of the reaction. After cooling down, the reaction mixture was extracted with ethyl acetate/water. The organic layer was collected and dried over magnesium sulfate. After evaporation, the residue was purified with flash chromatography to give the product as yellow solid (30 mg, 49%). 1H NMR (300 MHz, CD2Cl2, δ): 7.79-7.23 (m, 18H), 7.32 (d, J=6.0 Hz, 2H), 5.11 (s, 2H), 4.53 (s, 2H), 4.15 (s, 2H), 1.53 (s, 12H); MS (ESI) m/z 597.41.

Provenance & Evidence