Hydrochloric Acid → HCID 59322432, compound

Participants

Reaction Conditions

Reaction Steps

Charge (R)-(1-benzylpiperidin-2-yl)methanol (30.0 g, 0.146 mol, ˜1.0 eq., crude) in 350 mL benzene and add a solution of phosphorus tribromide (20.6 mL, 0.219 mol, 1.5 eq) in benzene at 0° C. under nitrogen atmosphere. Heat the reaction mass at 70° C. for 16 h. After completion of reaction, quench the reaction with saturated solution of sodium carbonate (100 mL) and extract the compound in EA (3×100 mL). Wash the organic layer with brine and dry over anhydrous sodium sulfate. Concentrate under reduced pressure and dissolve the solid residue in diethyl ether. Filter the dissolved portion and add slowly HCl (1.2 eq, 2 N in diethyl ether) and stir for 30 minutes at RT. Filter the precipitated salt and wash with EA followed by hexane. Dry under high vacuum to get 13.2 g of (R)-1-benzyl-2-(bromomethyl)piperidine as hydrochloride salt. MS(ES): m/z=268, 270 (M+H).

Provenance & Evidence