Hydrochloric Acid → N-(4-((R)-3-aminopiperidin-1-yl)-5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)morpholine-2-carboxamide hydrochloride

Participants

Reaction Steps

A solution of tert-butyl 2-(5-bromo-4-((R)-3-(tert-butoxycarbonylamino)piperidin-1-yl)-1H-pyrrolo[2,3-b]pyridin-3-ylcarbamoyl)morpholine-4-carboxylate diastereomer #2 (80 mg, 0.13 mmol) in DCM (3 mL) at room temperature was treated with TFA (1 mL). The mixture was stirred at room temperature for 1 hour and concentrated to dryness. The resulting residue was then purified by reverse phase HPLC (0-50% ACN in water). The product isolated was next dissolved in minimal DCM (with MeOH to aid solubility) and added to a stirring solution of 1M HCl in ether. The resulting solid was filtered, washed with ether and dried to give N-(4-((R)-3-aminopiperidin-1-yl)-5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)morpholine-2-carboxamide hydrochloride diastereomer #2 (44 mg, 64% yield). 1H NMR (400 MHz, D2O) δ 8.18 (s, 1H), 7.57 (s, 1H), 4.55-4.51 (m, 1H), 4.20-4.16 (m, 1H), 3.97-3.90 (m, 1H), 3.67-3.64 (m, 1H), 3.49-3.29 (m, 5H), 3.20-3.08 (m, 2H), 2.95-2.92 (m, 2.09-2.06 (m, 1H), 1.81-1.69 (m, 2H), 1.53-1.49 (m, 1H); LCMS (APCI+) m/z 423, 425 (M+H)+.

Provenance & Evidence