Trifluoroacetic acid → N-benzylaminosulfonamide

Participants

Reaction Steps

The condensed sulfamide having a t-butoxycarbonyl protecting group obtained as Sample No. 1 of Example 1 is dissolved in a mixture of dichloromethane (15 vol.) and anisole (15 vol.) under ice cooling, and trifluoroacetic acid (15 vol.) is added thereto. The mixture is stirred for 50 minutes, and for 1 hour after the ice bath is removed. The reaction mixture is concentrated. The residue is recrystallized from a mixture of ether and petroleum ether (1:6) to give benzylsulfamide. Colorless crystals. Yield: 90%.

Provenance & Evidence