反应详情

Sequentially treat a solution of 1-(6-(4-fluorophenyl)-4,5-dimethylpyridazin-3-yl)-N-methylpiperidin-4-amine (100 mg, 0.318 mmol) in CH2Cl2 (3.2 mL) with (S)-1-(tert-butoxycarbonyl)piperidine-2-carboxylic acid (109 mg, 0.477 mmol), triethylamine (0.067 mL, 0.477 mmol) and EDCI (92 mg, 0.477 mmol). Stir the resulting mixture at ambient temperature for 2 d. Pour the reaction mixture into H2O containing NaHCO3. Separate the layers, and extract the aqueous layer with CH2Cl2. Combine the organic layers, dry over Na2SO4, filter, and concentrate under reduced pressure. Purify the residue by flash silica gel chromatography (gradient of 0 to 2% 2 M NH3/MeOH in CH2Cl2) to afford the title compound as a white solid (82 mg, 49%). ES/MS m/z 526.2 (M+1).

1. customSeparate the layers
2. extractionextract the aqueous layer with CH2Cl2
3. dry with materialdry over Na2SO4
4. filtrationfilter
5. concentrationconcentrate under reduced pressure
6. customPurify the residue by flash silica gel chromatography (gradient of 0 to 2% 2 M NH3/MeOH in CH2Cl2)