4-Methylmorpholine → HCID 178494196, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (22.0 mg, 0.135 mmol, 6.56 equiv), 5-(4-amino-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazol-5-yl)-6-methoxynicotinonitrile (7.1 mg, 0.020 mmol, 1 equiv), and 2-chloro-2,4-dimethoxy-1,3,5-triazine (23.7 mg, 0.135 equiv, 6.56 equiv) in acetonitrile (2 mL) was added 4-methylmorpholine (23 uL, 0.21 mmol, 10 equiv) at 24° C. After 2 days, the reaction mixture was partitioned between saturated aqueous sodium bicarbonate solution (2 mL), saturated aqueous sodium chloride solution (2 mL), and ethyl acetate (5 mL). The organic was separated, and the aqueous was extracted with ethyl acetate (2×5 mL). The combined organic was dried over anhydrous sodium sulfate, filtered, and concentrated. The crude material was dissolved in ethanol (3 mL) and 6 N aqueous hydrochloric acid (1 mL) and heated to 50° C. After 5 h, the reaction mixture was concentrated in vacuo and purified by preparative HPLC to afford a white solid (1.1 mg, 15% yield). 1H NMR (400 MHz, CDCl3), δ: 9.72 (s, 1H), 8.80 (dd, J=7.0, 1.6 Hz, 1H), 8.74 (s, 1H), 8.66 (m, 1H), 8.54 (d, J=2.2 Hz, 1H), 8.47 (s, 1H), 8.22 (d, J=1.9 Hz, 1H), 7.04 (dd, J=7.0, 4.2 Hz, 1H), 4.11 (s, 3H). LCMS (ESI): M+H=361.1

Provenance & Evidence