反应详情

Sodium iodide (903 mg; 6.02 mmol) was added to a solution of chloroacetamide 6 (2.088 g; 6.00 mmol), 1-(3-trifluoromethylbenzyl)-[1,4]diazepane (7.40) (1.863 g; 7.21 mmol) and DIPEA (1.45 mL; 8.32 mmol) in 3:1 acetonitrile:THF (30 mL). After 21 h the reaction was concentrated on a rotary evaporator. EtOAc (90 mL) was added and the suspension was washed with 50% saturated NaHCO3 (25 mL), water (3×25 mL) and saturated NaCl (2×25 mL). The solution was dried (MgSO4), filtered, concentrated to an oil then purified on silica gel (340 mL), eluting with 9:1 EtOAc:methanol. Pure product was obtained as a hard white foam (3.10 g; 91%). LC (method B) tR=12.6 min; 1H NMR (200 MHz, CDCl3) δ 9.64 (s, 1H), 8.36 (m, 2H), 7.7-7.3 (m, 7H), 7.22 (s, 1H), 6.56 (brs, 1H), 5.42 (brt, J=5.8 Hz, 1H), 3.75 (s, 2H), 3.68 (m, 2H), 3.54 (m, 2H), 3.32 (s, 2H), 3.0-2.7 (m, 8H), 1.93 (m, 2H), 1.65 (s, 3H). ESIMS 570 (12) [MH+], 286 (100).

1. concentrationAfter 21 h the reaction was concentrated on a rotary evaporator
2. additionEtOAc (90 mL) was added
3. washthe suspension was washed with 50% saturated NaHCO3 (25 mL), water (3×25 mL) and saturated NaCl (2×25 mL)
4. dry with materialThe solution was dried (MgSO4)
5. filtrationfiltered
6. concentrationconcentrated to an oil
7. customthen purified on silica gel (340 mL)
8. washeluting with 9:1 EtOAc
9. customPure product was obtained as a hard white foam (3.10 g; 91%)