Trifluoroacetic acid → N-benzylaminosulfonamide
Reaction equation
[S:1]([NH2:5])([NH2:4])(=[O:3])=[O:2].F[C:7](F)(F)C(O)=O.[C:13]1(OC)[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1>ClCCl>[CH2:7]([NH:4][S:1]([NH2:5])(=[O:3])=[O:2])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
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%.