A mixture of 4-[5-amino-6-[5-[4-(bromomethyl)phenyl]-1,3,4-oxadiazol-2-yl]pyrazin-2-yl]-N,N-dimethyl-benzamide (200 mg, 0.4172 mmol) and potassium acetate (102.4 mg, 1.043 mmol) in DMF (5.714 mL) was heated at 100° C. for 4 h in a sealed microwave tube. The reaction mixture was cooled to room temperature and poured onto ice/water and acidified by HCl (1.043 mL of 1 M, 1.043 mmol). The mixture was extracted with ethyl acetate (3×10 mL) and the combined organic extracts washed with brine (3×10 mL). The extracts were dried over MgSO4 and concentrated under reduced pressure to give a yellow solid (150 mg, 74% yield); 1H NMR (400 MHz, DMSO) d 2.13 (s, 3H), 2.98-3.02 (m, 6H), 5.22 (s, 2H), 7.55 (d, 2H), 7.66 (d, 2H), 7.78 (br s, 2H), 8.16-8.19 (m, 4H) and 8.99 (s, 1H) ppm; MS (ES+) 459.18
