反应详情

Using the same procedure as described for the preparation of 250a, reaction of 251b (1.01 g, 3.80 mmol) with 3,5-dibromo-1-methylpyridin-2(1H)-one (1.01 g, 3.80 mmol) afforded an 81% yield (1.40 mg) of 251c as a brown solid: mp 120-121° C.; 1H NMR (500 MHz, DMSO-d6) d 8.70 (s, 1H), 8.57 (d, 1H, J=2.5 Hz), 7.86 (d, 1H, J=3.0 Hz), 7.48 (d, 1H, J=2.5 Hz), 7.35 (d, 1H, J=9.0 Hz), 7.28 (m, 1H), 4.95 (m, 1H), 4.3 (m, 2H), 3.80 (m, 2H), 3.50 (s, 3H), 1.38 (s, 9H); MS (ESI+) m/z 452.3 (M+H).