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-85e37eb0157c4996949a0edff5c7ad62

Quelldatensatz

uspto-grants-2007_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07253196B2