2-Bromoethanol → HCID 22346783, Verbindung

Temperatur

50 °C

To a solution of 3-iodo-1H-pyrazolo[3,4-d]pyrimidin-4-amine (5.00 g, 19.1 mmol) in DMF (40 mL) was added sodium hydride (60%, 1.53 g, 38.3 mmol) and the reaction mixture was stirred for 20 min. 2-bromoethanol (1.50 mL, 21.1 mmol) was added and the reaction mixture was heated at 50° C. for 18 h. The reaction mixture was cooled to ambient temperature and concentrated to afford a brown sludge. Ice water (50 mL) was added and the resulting precipitate was collected by filtration, rinsed with water (50 mL) and ether (50 mL), and dried in vacuo to afford 2-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)-1-ethanol as a beige solid (4.30 g, 14.1 mmol): 1H NMR (d6-DMSO, 400 MHz): δH 8.19 (1H, s), 4.84 (1H, t, J=5.8 Hz), 4.30 (1H, t, J=5.8 Hz), and 3.77 (2H, app q, J=5.6 Hz); RP-HPLC (Hypersil C18, 5 μm, 100 Å, 15 cm; 5%-100% acetonitrile-0.1 M ammonium acetate over 15 min, 1 mL/min). Rt 7.35 min.

1. temperatureThe reaction mixture was cooled to ambient temperature
2. concentrationconcentrated
3. customto afford a brown sludge
4. filtrationthe resulting precipitate was collected by filtration
5. washrinsed with water (50 mL) and ether (50 mL)
6. customdried in vacuo

ORD-Eintrag

ord-c22fdcee6262481eb629800df5e08ef6

Quelldatensatz

uspto-grants-2005_07

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06921763B2