反应详情

1-[4-Amino-3-chloro-5-(trifluoromethyl)phenyl]-2-bromoethanone (0.55 g), N-[5-(2-phenylethoxy)pentyl]benzenemethanamine (0.52 g) and N,N-diisopropylethylamine (0.25 g) were stirred in tetrahydrofuran (15 ml) at room temperature under nitrogen for 40 h. The mixture was filtered and the filtrate evaporated in vacuo. The residue was dissolved in methanol (20 ml) and sodium borohydride (0.18 g) was added portionwise to the stirred solution at 0° under nitrogen. The mixture was left to stand at room temperature under nitrogen overnight, 2N hydrochloric acid (10 ml) added and the solvent evaporated in vacuo. The residue was partitioned between 8% sodium bicarbonate (100 ml) and ethyl acetate (100 ml), the organic phase separated, dried and evaporated in vacuo to give an oil. Purification by FCC on triethylamine deactivated silica (Merck 9385) eluting with cyclohexane-ethyl acetate (9:1) gave the title compound as a colourless oil (0.5 g).

1. filtrationThe mixture was filtered
2. customthe filtrate evaporated in vacuo
3. dissolutionThe residue was dissolved in methanol (20 ml)
4. additionsodium borohydride (0.18 g) was added portionwise to the stirred solution at 0° under nitrogen
5. waitThe mixture was left
6. addition2N hydrochloric acid (10 ml) added
7. customthe solvent evaporated in vacuo
8. customThe residue was partitioned between 8% sodium bicarbonate (100 ml) and ethyl acetate (100 ml)
9. customthe organic phase separated
10. customdried
11. customevaporated in vacuo
12. customto give an oil
13. customPurification by FCC on triethylamine deactivated silica (Merck 9385)
14. washeluting with cyclohexane-ethyl acetate (9:1)