Hydrochloric Acid → (1R)-1-{1-[(3S)-Piperidin-3-yl]-1H-imidazo[4,5-d]thieno[3,2-b]pyridin-2-yl}ethanol hydrochloride

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Reaction Steps

To a solution of tert-butyl (3S)-3-{2-[(1R)-1-hydroxyethyl]-1H-imidazo[4,5-d]thieno[3,2-b]pyridin-1-yl}piperidine-1-carboxylate (0.25 g, 0.62 mmol) in methylene chloride (3.5 mL) was added 4.0 M hydrogen chloride in 1,4-dioxane (1.2 mL, 5.0 mmol). A precipitate immediately formed. The reaction was stirred at room temperature for 2 h. The solvents were evaporated and the solids dried in vacuo to give 0.21 g of the product as the HCl salt. LCMS calculated for C15H19N4OS (M+H)+: m/z=303.1. Found: 303.0.

Provenance & Evidence