Hydrochloric Acid → 6-Cyclopropyl-4-fluoro-1-(4-piperidinyl)-1,3-dihydro-2H-benzimidazol-2-one hydrochloride

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Reaction Steps

1,1-Dimethylethyl 4-(6-cyclopropyl-4-fluoro-2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)-1-piperidinecarboxylate (D28, 0.28 mmol, 107 mg) was dissolved in 1 ml of dichloromethane and treated with HCl (1 ml of a 4M solution in 1,4-dioxane) at room temperature and the mixture stirred at room temperature for 3 hours. The solvent was evaporated to afford the title compound, 100 mg, 0.32 mmol, complete conversion, M++H=276.

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