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

Participants

Reaction Steps

A Solution of 2 g (12.8 mmol) of 4-(2-pyridyl)pyridine (Aldrich) and 2.18 g (12.8 mmol) of benzylbromide in 15 mL of DMF and 15 mL of CH3CN was stirred at 95° C. for 4 h. The reaction mixture was then concentrated and redissolved in 20 mL of methanol. To the reaction mixture at 0° C. was added 0.95 g, (25.6 mmol) of NaBH4 and the reaction mixture was stirred for 1 h. The reaction was quenched with 6N HCl, and was partitioned between CH2Cl2 and 1N NaOH. The aqueous layer was extracted 3 times with CH2Cl2, dried over Na2SO4, filtered and the filtrate was concentrated. The residue was purified chomatography [silica, CH2Cl2:ethyl acetate:(2M NH3 in MeOH), 100:100:2] to give 3.2 g of the title compound.

Provenance & Evidence