反应详情

Combine 3-(3-fluoro-pyridin-4-yl)-5-methyl-isoxazole-4-carboxylic acid (0.41 g, 0.0019 mol) with (3-amino-cyclohexylmethyl)-carbamic acid benzyl ester (0.55 g, 0.0019 mol), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (0.36, 0.0019 mol), 1-hydroxy-7-azabenzo-triazole (0.25 g, 0.0019 mol), and N,N-diisopropylethyl amine (0.96 mL, 0.0055 mol), in N,N-dimethylformamide (10 mL). Stir the mixture overnight at ambient temperature. Concentrate in vacuo and take up the residue in water and extract with ethyl acetate. Concentrate and elute over silica gel using methanol/dichloromethane resulting in the isolation of 0.66 g (76%) of the desired amide as a light yellowish solid. MS(ES): (M+1)+ 467.0, 468.1 m/z.

1. concentrationConcentrate in vacuo
2. extractionextract with ethyl acetate
3. concentrationConcentrate
4. washelute over silica gel