Hydrochloric Acid → (1S,4S)-2-(2,3-dichlorobenzoyl)-2,5-diazabicyclo[2.2.1]heptane

Participants

Reaction Steps

To a mixture of 5.5 g of tert-butyl (1S,4S)-5-(2,3-dichlorobenzoyl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate and 10 ml of methanol was added hydrochloride in 1,4-dioxane solution (4 mol/l, 20 ml) followed by stirring for 1.5 hour at room temperature. The reaction mixture was concentrated in vacuo and then the resulting residue was suspended with diethylether. The precipitate was filtered and dried to give a crystal of the title compound.

Provenance & Evidence