Diisopropylethylamine → 2-(3-(4-(7-(1-Methyl-1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidin-5-yl)-1H-pyrazol-1-yl)-1-(3,3,3-trifluoropropanoyl)azetidin-3-yl)acetonitrile

Participants

Reaction Steps

To a solution of 2-(3-(4-(7-(1-methyl-1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidin-5-yl)-1H-pyrazol-1-yl)azetidin-3-yl)acetonitrile hydrochloride (Example 62, 50.0 mg, 0.116 mmol) and HATU (52.8, 0.139 mmol) in dry DMF (0.50 mL) was added 3,3,3-trifluoropropanoic acid (19.3 mg, 0.150 mmol) and the mixture was stirred at ambient temperature for 2 minutes. DIEA (80.6 μL, 0.463 mmol) was added and the resulting homogeneous solution was stirred at ambient temperature for 18 hours. The reaction mixture was added to H2O (5.0 mL) and extracted with EtOAc. The combined extracts were washed with H2O, saturated aqueous NaHCO3 and dried over MgSO4. The solution was eluted through a silica gel column eluting with EtOAc then with 10% MeOH/EtOAc. The 10% MeOH/EtOAc pool was concentrated to give the title compound (32 mg, 59% yield) as a white solid. MS (apci) m/z=470.2 (M+H).

Provenance & Evidence