Triethylamine → {1-(1-{[6-[(diethylamino)methyl]-2-(trifluoromethyl)pyrimidin-4-yl]carbonyl}piperidin-4-yl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile

Participants

Reaction Steps

{1-Piperidin-4-yl-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile (30.0 mg, 0.0609 mmol, prepared as described in Example 1, Step H, except worked up to provide the free base) was added to a mixture of 6-[(diethylamino)methyl]-2-(trifluoromethyl)pyrimidine-4-carboxylic acid (22.8 mg, 0.0822 mmol, from Step A), triethylamine (33.9 μL, 0.244 mmol) and N,N,N′,N′-tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate (28.9 mg, 0.0761 mmol) in tetrahydrofuran (0.67 mL), that was prestirred for 30 minutes. After stirring overnight, the reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed successively with water, 0.1N NaOH and sat. NaCl, dried over sodium sulfate, filtered and concentrated. The residue was stirred in a 1:1 mixture of DCM:TFA for 1 hour, and solvents were removed in vacuo. The residue was then stirred with ethylenediamine (0.2 mL) in methanol (1 mL) until deprotection was complete. Purification via preparative HPLC-MS (MeCN/H2O containing 0.15% NH4OH) afforded product. Yield: 0.0156 g (41%); LC-MS: 622.2 (M+H)+. 1H NMR (400 MHz, DMSO-d6): δ 12.14 (br s, 1H), 8.82 (s, 1H), 8.69 (s, 1H), 8.42 (s, 1H), 7.91 (s, 1H), 7.61 (d, 1H), 7.06 (d, 1H), 4.06 (ddd, 1H), 3.82 (s, 2H), 3.75 (d, 2H), 3.62-3.46 (m, 5H), 3.31-3.21 (m, 1H), 3.16-3.06 (m, 1H), 2.55 (q, 4H), 1.85-1.74 (m, 1H), 1.70-1.60 (m, 1H), 1.37-1.18 (m, 2H), 0.98 (t, 6H). 19F NMR (400 MHz, DMSO-d6): δ −69.46 (s, 3F).

Provenance & Evidence