Trifluoroacetic acid → N3-(4-methoxybenzoyl)-3,4-pyridinediamine

Participants

Reaction Steps

A solution of N4-(tert-butyloxycarbonyl)-N3-(4-methoxybenzoyl)-3,4-pyridinediamine (600 mg, 1.75 mmol) in methylene chloride (8 mL) was treated with trifluoroacetic acid (1.35 mL, 17.5 mmol). After 6.5 h, the mixture was concentrated and the residue dissolved in water and treated with 5 N aqueous sodium hydroxide. The resulting precipitate was collected by filtration yielding 325 mg (76%) of the title compound.

Provenance & Evidence