Hydrochloric Acid → 4-(aminomethyl)-N-(1-(4-chlorophenyl)-3-hydroxypropyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxamide

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O-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (106 mg, 0.28 mmol) was added to 4-((tert-butoxycarbonylamino)methyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid (Intermediate 12) (100 mg, 0.27 mmol) and N,N-diisopropylethylamine (0.055 mL, 0.32 mmol) in NMP (5 mL) at 22° C. The resulting solution was stirred at 50° C. for 10 minutes then cooled to ambient temperature. 3-Amino-3-(4-chlorophenyl)propan-1-ol (Intermediate 29) (49.5 mg, 0.27 mmol) was added as a solution in NMP (2 mL) and the mixture was stirred at 22° C. for 16 hours. 4M HCl in dioxane (1 mL) was added and the mixture was stirred at 22° C. for a further 24 hours. The mixture was concentrated and the residue was purified by ion exchange chromatography, using an SCX column. The desired product was eluted from the column using 30% (2M NH3 in MeOH) in DCM and pure fractions were evaporated to dryness to afford crude product. The crude product was purified by preparative HPLC (Waters XBridge Prep C18 OBD column, 5μ silica, 19 mm diameter, 100 mm length), using decreasingly polar mixtures of water (containing 1% NH3) and MeCN as eluents. Fractions containing the desired compound were evaporated to dryness to afford 4-(aminomethyl)-N-(1-(4-chlorophenyl)-3-hydroxypropyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxamide (0.095 g, 81%) as a white solid.

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