反应详情

4-[1-(3,5-Dichlorophenyl)-2-oxo-1,2,3,4,5,6-hexahydro-benzimidazol-3a-ylmethyl]benzonitrile (150 mg) (0.38 mmol) in DMF (5 ml) was carefully dropped on a suspension of NaH 60% (18.2 mg) (1.2 eq) in DMF (5 ml) at RT. The reaction mixture was stirred 1 h at RT, then ethyl iodide (0.046 ml) (1.5 eq) was added. After one night, the reaction mixture was poured on water and extracted with tBuOMe. The organic layer was washed with water, dried over Na2SO4 and concentrated to yield a solid which was purified by HPLC to give 4-[1-(3,5-Dichlorophenyl)-3-ethyl-2-oxo-1,2,3,4,5,6-hexahydro-benzimidazol-3a-ylmethyl]benzonitrile (18.2 mg) as a white solid. 1H NMR (CDCl3):. 7.55 (2H, d), 7.25 (2H, d), 7.10 (1H, m), 6.80 (2H, m), 4.95 (1H, m), 3.75 (1H, m), 3.15 (1H, m), 3.0 (2H, s), 2.5-1.7 (6H, m), 1.25 (3H, t).

1. waitAfter one night
2. additionthe reaction mixture was poured on water
3. extractionextracted with tBuOMe
4. washThe organic layer was washed with water
5. dry with materialdried over Na2SO4
6. concentrationconcentrated
7. customto yield a solid which
8. customwas purified by HPLC