Benzyl Bromide → (1R,2S,4R,5S)-5-(Benzyloxy)bicyclo[2.2.1]heptan-2-ol

Temperatur

10 °C

To a stirred solution of (1R,2S,4R,5S)-bicyclo[2.2.1]-heptane-2,5-diol (1.15 g, 8.97 mmol) and 15-crown-5 (0.054 mL, 0.269 mmol) in tetrahydrofuran (30.0 mL, 8.97 mmol) were added at 10° C. (ice/water bath) finely ground sodium hydroxide (2.15 g, 53.8 mmol) and 1-(bromomethyl)benzene (1.07 mL, 8.97 mmol). After stirring at 10° C. for 3 h, the mixture was stirred at ambient temperature overnight. The mixture was partitioned between EtOAc and water, and the organic portions were washed with brine, and conc. in vacuo. The crude product was purified by flash column chromatography (0 to 80% of ethyl acetate in hexanes). The title compound was obtained as a colorless oil.

1. stirringthe mixture was stirred at ambient temperature overnight
2. customThe mixture was partitioned between EtOAc and water
3. washthe organic portions were washed with brine
4. customThe crude product was purified by flash column chromatography (0 to 80% of ethyl acetate in hexanes)

ORD-Eintrag

ord-0398e47c3d9a4f728465e8b40c186dab

Quelldatensatz

uspto-grants-2013_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08541592B2