Benzyl Bromide → 1-Benzyl-4-(3-phenylpropyl)-1,2,3,6-tetrahydropyridine

Participants

Reaction Conditions

Reaction Steps

A solution of 1.7 g (8.6 mmol) of 4-(3-phenylpropyl)pyridine and 1.5 mL of benzylbromide in 5 mL of ethanol was stirred at rt for 0.5 h. To the reaction mixture was added 10 mL of ethanol and the mixture was cooled to 0° C. To this mixture was added 0.5 g (13.2 mmol) of NaBH4 small portions over a period of 1 h. To the reaction mixture was then added 5 mL of a 1N NaOH solution and the mixture was partitioned between 200 mL of ether and 50 mL of H2O. The combined organic fractions were washed with sat'd NaCl solution, dried over MgSO4, filtered and the filtrate was concentrated. The residue was purified by chromatography (silica, hexanes:ethyl acetate, 9:1) to give the title compound.

Provenance & Evidence