Benzyl Bromide → HCID 11639750, compound

Participants

Reaction Steps

Compound 17 (2.12 g, 10 mmol) was mixed with DMF (50 ml). After stirring the mixture at room temperature for 30 minutes, NaH (1.6 g, 40 mmol) was added and stirred until the solution became clear. After that, benzyl bromide (5 ml) was added. The mixture was stirred and reacted at room temperature for 1 h. The reaction mixture was poured into cold water (200 ml) and the mixture was extracted with ethyl acetate. The organic phases were combined and washed with water and brine, then the organic phase was evaporated in reduced pressure, the residue was dissolved in anhydrous ethanol, and then the mixture was adjusted to pH 4 with concentrated HCl, and evaporated and recrystallized with acetone/ethyl ether, light yellow solids were obtained. The light yellow solids were dissolved in a mixed solution of water and ethyl acetate. The pH was adjusted to 8 with saturated NaHCO3 solution. The organic phases were isolated. The aqueous layer was extracted with ethyl acetate. After drying, decolorization with activated carbon, filtration, concentration, and recrystallization with ethyl ether, white solids (2.3 g, 57%) were obtained, mp 169-170° C.

Provenance & Evidence