反应详情

4-(4-Methyl-oxazol-5-yl)-benzoyl chloride (340 mg) is added portionwise to a mixture of 4-cyclopropylamino-piperidine-1-carboxylic acid tert-butyl ester (369 mg) and ethyldiisopropylamine (274 μL) in dichloromethane (10 mL). The mixture is stirred for 1 h at room temperature, washed with water, aqueous citric acid solution and 0.5 M NaOH, dried over Na2SO4 and concentrated in vacuo. The residue is chromatographed on silica gel (dichloromethane/methanol 50:1) to afford the title compound. Mass spectrum (ESI+): m/z=426 [M+H]+.

1. washwashed with water, aqueous citric acid solution and 0.5 M NaOH
2. dry with materialdried over Na2SO4
3. concentrationconcentrated in vacuo
4. customThe residue is chromatographed on silica gel (dichloromethane/methanol 50:1)