反应详情

To a degassed mixture of 2-amino-3-methoxy-4-(3-morpholin-4-ylpropoxy)benzonitrile (Step 3, 6.5 g, 22.2 mmol) and ethylene diamine (40 mL) was added sulfur (1.8 g, 55.4 mmol). The mixture was stirred at 100° C. for 3 h at which time water was added to the reaction mixture. The precipitate that was formed was collected and washed with water and then dried overnight under vacuum to provide the title compound (3.2 g, 43%): HPLC MS RT=1.25 min, MW=335.2; 1H NMR (DMSO-d6) δ: 7.15 (1H, d), 6.86 (2H, br s), 6.25 (1H, d), 4.02 (2H, t), 3.66 (3H, s), 3.57 (8H, m), 2.46 (2H, t), 2.44 (4H, m), 1.89 (2H, m).

1. additionwas added to the reaction mixture
2. customThe precipitate that was formed
3. customwas collected
4. washwashed with water
5. customdried overnight under vacuum