1-(1-Benzyl-piperidin-4-yl)-2-ethyl-5-fluoro-1H-benzimidazole → 2-Ethyl-5-fluoro-1-piperidin-4-yl-1H-benzimidazole

Participants

Reaction Steps

1-(1-Benzyl-piperidin-4-yl)-2-ethyl-5-fluoro-1H-benzimidazole (6.4 g) in methanol (100 ml) was hydrogenated with Pd/C (10%, 1.5 g) at room temperature for 8 h. The catalyst was removed and the filtrate was evaporated and dissolved in ethanol. The solution was acidified with conc. HCl(aq) and recrystallised by the addition of acetone. This yielded 5.3 g of the title compound as colourless crystals.

Provenance & Evidence