反应详情

(R)-tert-Butyl 1-(5-bromo-3-(3-methylbenzamido)-1H-pyrrolo [2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (123 mg, 0.233 mmol) in DCM (3 mL) at room temperature was treated with TFA (1 mL), and the reaction was stirred for 1 hour. The reaction mixture was then concentrated to dryness. The resulting residue was dissolved in minimal DCM and added to a stirring solution of 1M HCl in ether. The solid formed was filtered, washed with ether and dried to give (R)-N-(4-(3-aminopiperidin-1-yl)-5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-3-methylbenzamide hydrochloride (0.102 g, 87.4% yield). 1H NMR (400 MHz, D2O) δ 8.02 (s, 1H), 7.64 (s, 1H), 7.62-7.52 (m, 1H), 7.42-7.38 (m, 3H), 3.49-3.42 (m, 1H), 3.27-3.18 (m, 2H), 3.17-3.06 (m, 2H), 2.29 (s, 3H), 1.81-1.71 (m, 1H), 1.68-1.57 (m, 1H), 1.49-1.26 (m, 2H); LCMS (APCI+) m/z 428, 430 (M+H)+, Retention time=2.68 minutes (Method 2).

1. concentrationThe reaction mixture was then concentrated to dryness
2. dissolutionThe resulting residue was dissolved in minimal DCM
3. additionadded to a stirring solution of 1M HCl in ether
4. customThe solid formed
5. filtrationwas filtered
6. washwashed with ether
7. customdried