反应详情

5-Bromo-4-(piperazin-1-yl)-1H-pyrrolo[2,3-b]pyridine dihydrochloride (0.20 g, 0.56 mmol) and (R)-2-(tert-butoxycarbonylamino)-3-(4-chlorophenyl)propanoic acid (0.677 g, 2.25 mmol) were placed in DCM (5 mL) at room temperature. 1-Hydroxybenzotriazole (“HOBT”)—H2O (0.121 g, 0.79 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (“EDCI”; 0.14 g, 0.73 mmol), and triethylamine (0.39 mL, 2.82 mmol) were then added, and the reaction was stirred at room temperature for 18 hours. The reaction was then quenched with saturated Na2CO3 and extracted with DCM. The combined organic fractions were dried, filtered, and concentrated to give a crude residue. The crude residue was purified by column chromatography (500:7 DCM:MeOH) to give (R)-tert-butyl 1-(4-(5-bromo-1H-pyrrolo[2,3-b]pyridin-4-yl)piperazin-1-yl)-3-(4-chlorophenyl)-1-oxopropan-2-ylcarbamate (0.20 g, 62.9% yield).

1. customThe reaction was then quenched with saturated Na2CO3
2. extractionextracted with DCM
3. customThe combined organic fractions were dried
4. filtrationfiltered
5. concentrationconcentrated
6. customto give a crude residue
7. customThe crude residue was purified by column chromatography (500:7 DCM:MeOH)