Trifluoroacetic acid → (R)-6-chloro-1-(3-methoxypropyl)-2-(piperidin-3-yl)-1H-benzo[d]imidazole

Participants

Reaction Steps

((R)-tert-Butyl 3-(6-chloro-1-(3-methoxypropyl)-1H-benzo[d]imidazol-2-yl)piperidine-1-carboxylate (32C) (0.135 mmol, 0.055 g) was added to a 10 mL round-bottomed flask equipped for stirring under nitrogen. Dichloromethane (1 mL) and trifluoroacetic acid (1 mL) were then added and the resultant solution was allowed to stir under nitrogen for 4 hr. The reaction was then concentrated and dried in-vacuo affording (R)-6-chloro-1-(3-methoxypropyl)-2-(piperidin-3-yl)-1H-benzo[d]imidazole (32D) as a tan oil that was used directly in the next step without further purification. ESI-MS: m/z 308.3 (M+H)+.

Provenance & Evidence