反应详情

1-(1-(4-chlorobenzyl)-1H-benzo[d]imidazole-2-carbonyl)piperidine-4-carboxylic acid (50 mg, 0.126 mmol), EDC (48.2 mg, 0.251 mmol), and 1-hydroxybenzotriazole (34.0 mg, 0.251 mmol) were dissolved in DCM (Volume: 2.0 mL). The reaction was allowed to stir for 10 minutes before the addition of Hunig's Base (0.044 mL, 0.251 mmol) and 2-(pyridin-4-yl)ethanamine (0.030 mL, 0.251 mmol). The reaction was allowed to stir overnight. The reaction was diluted with water and ethyl acetate. The organic layer was washed with saturated sodium bicarbonate and saturated sodium chloride. The ethyl acetate layer was dried over magnesium sulfate, filtered and concentrated. The crude material was triturated in diethyl ether/ethyl acetate to obtain white solid. 1H-NMR (500 MHz, DMSO-d6) 8.47-8.43, 7.93, 7.74, 7.61, 7.39, 7.35-7.24, 7.21, 5.55, 4.45, 3.98, 3.33-3.28, 3.04, 2.87, 2.73, 2.40-2.31, 1.74, 1.58-1.32

1. washThe organic layer was washed with saturated sodium bicarbonate and saturated sodium chloride
2. dry with materialThe ethyl acetate layer was dried over magnesium sulfate
3. filtrationfiltered
4. concentrationconcentrated
5. customThe crude material was triturated in diethyl ether/ethyl acetate
6. customto obtain white solid