反应详情

1-[2-Hydroxy-3-propyl-4-((4-(1H-tetrazol-5-yl)phenoxy)methyl)phenyl]ethanone sodium salt (5 g, 0.013 mol), 1,3-dibromopropane (3.5 g, 0.18 mol), and MEK (50 ml) were combined potassium carbonate (4.15 g, 0.025 mol) potassium was added and the reaction mixture was stirred at room temperature overnight. The reaction solution was concentrated under reduced pressure. The volume of the concentrate was doubled by the addition of water and the resultant solution was extracted with ethyl acetate (3×). The ethylacetate layers were combined, washed with water, dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was chromatographed by HPLC (preparatory-scale, silica gel column, eluted with a mixture of 9:1 toluene:ethyl acetate) to yield 5.0 g, 82% yield of the title product: n.m.r. (300 MHz CDCl3) δ: 1.0 (t, 3H); 1.6 (m, 2H); 2.6 (s and t, 5H); 2.7 (t, 2H); 3.5 (t, 2 H); 4.8 (t, 2H); 5.15 (s, 2H); 7.1 (d, 2H); d, 1H); 7.6 (d, 1H); 8.1 (d, 2H); 12.7 (s, 1H).

1. additionwas added
2. concentrationThe reaction solution was concentrated under reduced pressure
3. additionThe volume of the concentrate was doubled by the addition of water
4. extractionthe resultant solution was extracted with ethyl acetate (3×)
5. washwashed with water
6. dry with materialdried over sodium sulfate
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customThe residue was chromatographed by HPLC (preparatory-scale, silica gel column
10. washeluted with a mixture of 9:1 toluene