反应详情

To a stirred suspension of 0.4 g (0.0015 mol) of the product from Example 4 and 0.63 g (0.0023 mol) of phenyl (4,6-dimethoxypyrimidin-2-yl)carbamate in 4 mls acetonitrile was added 0.35 g (0.0023 mol) of 1,8-diazabicyclo[5.4.0]undec-7-ene and stirred for 30 minutes. The solution was diluted with water and acidified with 1 normal hydrochloric acid. The resulting precipitate was collected and washed with water and ether to afford 0.45 g (67%) white solid: m.p. 168°-170°; NMR (CDCl3, 200 MHz), 1.07 (3H, t, J=7 Hz), 1.85 (2H, m), 3.7 (2H, m), 3.97 (6H, s), 5.8 (1H, s), 7.26 (NH), 7.8 (1H, m), 8.6 (1H, m), 8.9 (1H, m), 12.9 (NH); IR (nujol) 3320, 1740, 1610, 1580, 1375, 1195, 1170 cm-1.

1. customThe resulting precipitate was collected
2. washwashed with water and ether