反应详情

To a solution of the product from step 2 (1.66 g, 4.86 mmol) in DMF (20 mL) was added NaH (60% in mineral oil, 0.24 g, 5.83 mmol) under N2 atmosphere. The mixture was stirred for 1 h at room temperature, followed by the dropwise addition of benzhydryl bromide (1.8 g, 7.29 mmol) in DMF (5 mL). This reaction mixture was stirred overnight at room temperature. Water (500 mL) was added to reaction mixture, it was extracted with EtOAc, washed with brine, dried (Na2SO4), and concentrated under reduced pressure to a brown syrup, which was purified by silica-gel chromatography using 10% EtOAc/hexanes as eluent to isolate 4-[3-(1-Benzhydryl-2-methyl-1H-indol-3-yl)-propyl]-benzoic acid methyl ester as a white solid in 76% (1.47 g) yield.

1. stirringThis reaction mixture was stirred overnight at room temperature
2. extractionwas extracted with EtOAc
3. washwashed with brine
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated under reduced pressure to a brown syrup, which
6. customwas purified by silica-gel chromatography