Triethylamine → {1-(1-{[6-(azetidin-1-ylmethyl)-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 (0.150 g, 0.30 mmol, prepared as described in Example 1, Step H, except worked up to provide the free base) was added to a mixture of 6-(azetidin-1-ylmethyl)-2-(trifluoromethyl)pyrimidine-4-carboxylic acid (0.20 g, 0.46 mmol, as the hydrochloride salt from Step B), triethylamine (0.255 mL, 1.83 mmol) and N,N,N′,N′-tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate (0.150 g, 0.396 mmol) in tetrahydrofuran (3.0 mL) and DCM (3.0 mL) that was pre-stirred for 30 minutes. After stirring for 2 hours, the reaction mixture was diluted with ethyl acetate and washed successively with water, 0.1 N NaOH, and brine. The organic phase was dried over sodium sulfate, filtered and concentrated. The residue was dissolved in a 1:1 mixture of DCM:TFA, stirred for 1 hour, concentrated again, then stirred with methanol (3 mL) containing ethylenediamine (0.2 mL). After complete deprotection, the product was purified via preparative HPLC-MS (C18 eluting with a gradient of MeCN/H2O containing 0.1% TFA) then again eluting with MeCN/H2O containing 0.15% NH4OH to afford desired product. Yield: 0.043 g (23%); LC-MS: 606.2 (M+H)+. 1H NMR (400 MHz, DMSO-d6): δ 12.15 (br s, 1H), 8.82 (s, 1H), 8.69 (s, 1H), 8.42 (s, 1H), 7.81 (s, 1H), 7.61 (d, 1H), 7.06 (d, 1H), 4.10-4.01 (m, 1H), 3.81 (s, 2H), 3.75 (dd, 2H), 3.62-3.44 (m, 5H), 3.31-3.21 (m, 5H), 3.14-3.05 (m, 1H), 2.60-2.52 (m, 1H), 2.04 (quin, 2H), 1.83-1.73 (m, 1H), 1.69-1.60 (m, 1H), 1.37-1.18 (m, 2H). 19F NMR (400 MHz, CD3OD): δ −72.38 (s, 3F).

Provenance & Evidence