反应详情

A solution of 3-[methyl-(4-nitro-phenyl)-amino]-propionyl chloride (550 mg, 4.04 mmol) in dichloromethane (5 mL) was cooled to 0° C., triethylamine (1.12 mL, 8.08 mmol) was added followed, after 5 min, by (4,6-dimethyl-pyridin-2-yl)-methyl-amine (1.14 g, 4.73 mmol). The reaction mixture was warmed to room temperature and stirred for 30 min then partitioned between water and dichloromethane. The organic phase was separated, washed with saturated bicarbonate solution, brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure to give a residue which was purified by column chromatography over silica gel (60-120 mesh) using 20% ethyl acetate in hexane as eluent to afford N-(4,6-dimethyl-pyridin-2-yl)-N-methyl-3-[methyl-(4-nitro-phenyl)-amino]-propionamide (600 mg, 43%) as a yellow solid.

1. customthen partitioned between water and dichloromethane
2. customThe organic phase was separated
3. washwashed with saturated bicarbonate solution, brine
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated under reduced pressure
6. customto give a residue which
7. customwas purified by column chromatography over silica gel (60-120 mesh)