Dimethyl Sulfoxide → HCID 124000320, compound

Participants

Reaction Conditions

Reaction Steps

A solution containing 3-(6-fluoropyridin-2-yl)-5-(5-fluoropyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-c]pyridine (0.055 g, 0.14 mmol) and (S)-tert-butyl piperidin-3-ylcarbamate (0.196 g, 0.979 mmol) in Dimethyl sulfoxide (0.840 mL, 11.8 mmol) was heated at 95° C. for 18 h. The reaction was quenched with water and then extracted with EtOAc 2×. The combined organic layer was dried with Na2SO4, filtered and concentrated. The crude product was dried under high vacuum overnight to give tert-butyl (3S)-1-(6-(5-(5-fluoropyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-c]pyridin-3-yl)pyridin-2-yl)piperidin-3-ylcarbamate which was dissolved in 1,4-Dioxane (1.50 mL, 19.2 mmol) and treated with 4.0 M of Hydrogen chloride in 1,4-Dioxane (2.50 mL). The reaction was stirred at RT for 18 h. The reaction was concentrated then submitted for rHPLC to give 206 (37.8 mg, 69% yield). ESI MS m/z=390.1 (M+1). 1H NMR (400 MHz, DMSO) δ 9.22 (s, 1H), 9.18 (s, 1H), 9.03 (s, 1H), 8.60 (d, J=2.7 Hz, 1H), 8.32 (d, J=10.3 Hz, 1H), 7.66 (t, J=8.0 Hz, 1H), 7.45 (d, J=7.4 Hz, 1H), 6.87 (d, J=8.5 Hz, 1H), 4.37-4.25 (m, 2H), 3.08-2.96 (m, 1H), 2.85-2.75 (m, 2H), 2.00-1.88 (m, 1H), 1.85-1.75 (m, 1H), 1.68-1.56 (m, 1H), 1.42-1.25 (m, 1H)

Provenance & Evidence