Triethylamine → {1-(1-{[6-{[ethyl(methyl)amino]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

After prestirring a mixture of 6-{[ethyl(methyl)amino]methyl}-2-(trifluoromethyl)pyrimidine-4-carboxylic acid (40.1 mg, 0.152 mmol, from Step A), triethylamine (56.6 μL, 0.406 mmol) and N,N,N′,N′-tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate (54.0 mg, 0.142 mmol) in tetrahydrofuran (1.1 mL) for 30 minutes, {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 (50.0 mg, 0.101 mmol, prepared as described in Example 1, Step H, except worked up to provide the free base) was added and the reaction stirred overnight. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was successively washed with water, 0.1N NaOH and sat. NaCl, dried over sodium sulfate, filtered and concentrated. The product was deprotected by stirring first in a 1:1 mixture of DCM:TFA for 1 hour, followed by evaporation and stirring with ethylenediamine (0.2 mL) in methanol (1 mL) until deprotection was complete. Purification via preparative HPLC-MS (C18 eluting with a gradient of MeCN/H2O containing 0.15% NH4OH) afforded product. Yield: 0.025 g (41%); LC-MS: 608.2 (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), 7.89 (s, 1H), 7.61 (d, 1H), 7.06 (d, 1H), 4.11-4.02 (m, 1H), 3.78-3.71 (m, 4H), 3.63-3.48 (m, 5H), 3.32-3.21 (m, 1H), 3.17-3.07 (m, 1H), 2.62-2.53 (m, 1H), 2.48 (q, 2H), 2.21 (s, 3H), 1.84-1.74 (m, 1H), 1.70-1.61 (m, 1H), 1.37-1.18 (m, 2H), 1.03 (t, 3H). 19F NMR (400 MHz, DMSO-d6): δ −69.45 (s, 3F).

Provenance & Evidence