反应详情

温度

50 °C

[3-[[3-(2-Ethoxy-2-oxoethyl)-1-(phenylmethyl)-1H-indol-5-yl]oxy]propyl]phosphonic acid dimethyl ester (590 mg, 1.3 mmol) was dissolved in 40 mL of toluene and 10 mL of 0.67M (CH3)2AlNH2 in benzene/toluene were added. The mixture was heated at 50° C. for 3.25 hours and water and 1N HCl added. The mixture was extracted with a large volume of ethyl acetate and the organic layer was washed with brine, dried (Na2SO4) and concentrated at reduced pressure. The residue was chromatographed on silica gel eluting with a gradient, 1% MeOH/methylene chloride→4% MeOH/methylene chloride, to give 450 mg (80% yield) of [3-[[3-(2-amino-2-oxoethyl)-1-(phenylmethyl)-1H-indol-5-yl]oxy]propyl]phosphonic acid dimethyl ester.

1. extractionThe mixture was extracted with a large volume of ethyl acetate
2. washthe organic layer was washed with brine
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated at reduced pressure
5. customThe residue was chromatographed on silica gel eluting with a gradient, 1% MeOH/methylene chloride→4% MeOH/methylene chloride