Isobutylene oxide → 5-Fluoro-2-[1-(2-hydroxy-2-methylpropyl)-1H-indazol-5-yloxy]-benzonitrile

Temperatur

80 °C

A solution of 5-fluoro-2-(1H-indazol-5-yloxy)-benzonitrile (0.100 g, 0.395 mmol) in DMF (4 mL) was treated with NaH (0.022 g, 60%, 056 mmol) and stirred for 5 minutes. 2,2-Dimethyloxirane (0.035 g, 0.48 mmol) was added and the solution was stirred at room temperature for 1 hour. The reaction mixture was then heated to 80° C. for 1.5 hours. The solution was cooled to room temperature, diluted with ether (50 mL), washed with water (3×5 mL), brine, dried over MgSO4, and concentrated under reduced pressure. The residue was chromatographed eluting with ethyl acetate/hexanes (1:1) to afford 0.070 g of product (47% yield).

1. stirringthe solution was stirred at room temperature for 1 hour
2. temperatureThe solution was cooled to room temperature
3. washwashed with water (3×5 mL), brine
4. dry with materialdried over MgSO4
5. concentrationconcentrated under reduced pressure
6. customThe residue was chromatographed
7. washeluting with ethyl acetate/hexanes (1:1)

ORD-Eintrag

ord-585733aeef87427db6383082b1317ff5

Quelldatensatz

uspto-grants-2011_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08017641B2