Hydrochloric Acid → HCID 73505860, compound

Temperature

80 °C

To a stirred solution of compound (R)-1-(4,6-dichloro-5-cyanopyridin-2-yl)-3-(1-phenylethyl)urea (0.10 g, 0.29 mmol) in ethanol (8.0 mL) was added hydrazine hydrate (0.59 mL, 0.59 mmol, 1M solution in THF) and stirred at 80° C. for 2 h. After the precipitation of white solid, the reaction mixture was cooled to room temperature and a 2M solution of HCl in water (0.29 mL, 0.59 mmol) was added stirred at same temperature for 2 h. After confirming the completion of reaction by TLC, the reaction mixture was concentrated under reduced pressure to give crude product which was purified by preparative HPLC to afford (R)-1-(3-amino-4-chloro-1H-pyrazolo[4,3-c]pyridin-6-yl)-3-(1-phenylethyl)urea. 1H NMR (ppm, 400 MHz, DMSO-d6): δ 11.88 (s, 1H), 9.05 (s, 1H), 7.44 (s, 1H), 7.36-7.32 (m, 4H), 7.23 (d, J=8.00 Hz, 2H), 5.42 (s, 2H), 4.84-4.82 (m, 1H), 1.38 (d, J=8.00 Hz, 3H), MS ES calc'd. for C15H15ClN6O [M+H]+ 331. Found 331.

1. customAfter the precipitation of white solid
2. temperaturethe reaction mixture was cooled to room temperature
3. stirringstirred at same temperature for 2 h
4. customthe completion of reaction by TLC
5. concentrationthe reaction mixture was concentrated under reduced pressure
6. customto give crude product which
7. customwas purified by preparative HPLC

ORD record

ord-babb0810e92b41419134eef882d2783d

Source dataset

uspto-grants-2016_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09233979B2