反应详情

2-Ethyl-5-methoxy-1H-indole (5.6 g, 21.5 mmol) was dissolved in 150 mL of DMF and 20 mL of THF and 1.0 g (25 mmol) of 60% sodium hydride was added. After stirring for 0.17 hours, 3.0 mL (25 mmol) of benzyl bromide was added. The mixture was stirred at room temperature for 10 hours, diluted with water and extracted with ethyl acetate. The ethyl acetate solution was washed with water, saturated NaCl solution, and dried (Na2SO4). The EtOAc was evaporated and the residue was chromatographed on silica gel eluting with a gradient, 5% EtOAc/hexane→415% EtOAc/hexane to give 4.6 g (82% yield) of 2-ethyl-5-methoxy-1-(phenylmethyl)-1H-indole.

1. stirringThe mixture was stirred at room temperature for 10 hours
2. extractionextracted with ethyl acetate
3. washThe ethyl acetate solution was washed with water, saturated NaCl solution
4. dry with materialdried (Na2SO4)
5. customThe EtOAc was evaporated
6. customthe residue was chromatographed on silica gel eluting with a gradient, 5% EtOAc/hexane→415% EtOAc/hexane