反应详情

Combine 3-(2-chloro-pyridin-3-yl)-5-methyl-isoxazole-4-carboxylic acid (0.50 g, 0.0021 mol) with (3-amino-cyclohexylmethyl)-carbamic acid benzyl ester (0.63 g, 0.0021 mol), 1-[3-(dimethyl-amino)propyl]-3-ethylcarbodiimide hydrochloride (0.40, 0.0021 mol), 1-hydroxy-7-azabenzo-triazole (0.29 g, 0.0021 mol), and N,N-diisopropylethyl amine (1.10 mL, 0.0063 mol), in N,N-dimethylformamide (10 mL). Stir over a weekend at ambient temperature. Concentrate in vacuo and take up in water and extract with ethyl acetate. Wash the combined extracts with water, dry over sodium sulfate, and concentrate in vacuo. Elute over silica gel using ethanol/dichloromethane allowing for the isolation of 0.87 g (86%) of the desired amide as a white solid. MS(ES): (M+1)+ 483.1, 485.1 m/z.

1. concentrationConcentrate in vacuo
2. extractionextract with ethyl acetate
3. washWash the combined extracts with water
4. dry with materialdry over sodium sulfate
5. concentrationconcentrate in vacuo
6. washElute over silica gel