Trifluoroacetic acid → (R)-6-chloro-1-(3-methoxypropyl)-2-(piperidin-3-yl)-1H-benzo[d]imidazole
反応式
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:9]=[C:8]([C@@H:10]3[CH2:15][CH2:14][CH2:13][N:12](C(OC(C)(C)C)=O)[CH2:11]3)[N:7]([CH2:23][CH2:24][CH2:25][O:26][CH3:27])[C:6]=2[CH:28]=1.FC(F)(F)C(O)=O>ClCCl>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:9]=[C:8]([C@@H:10]3[CH2:15][CH2:14][CH2:13][NH:12][CH2:11]3)[N:7]([CH2:23][CH2:24][CH2:25][O:26][CH3:27])[C:6]=2[CH:28]=1参加物
4
実験手順
((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)+.