HCID 8194946, compound → HCID 2052066, compound

Reaction equation

[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([S:10]([N:13]2[CH2:18][CH2:17][N:16]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=3[CH3:25])[CH2:15][CH2:14]2)(=[O:12])=[O:11])=[CH:6][CH:5]=1)([O-])=O.[H][H]>[Pt]=O.C(Cl)(Cl)Cl>[NH2:1][C:4]1[CH:9]=[CH:8][C:7]([S:10]([N:13]2[CH2:14][CH2:15][N:16]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=3[CH3:25])[CH2:17][CH2:18]2)(=[O:12])=[O:11])=[CH:6][CH:5]=1

Participants

Procedure

A mixture of 5.00 g (0.0142 m) of 1-[(p-nitrophenyl)sulfonyl]-4-(o-methylphenyl)piperazine, 0.3 g of platinum oxide, and 150 ml of chloroform is shaken under pressure on a Parr hydrogenator until hydrogen uptake ceases (25 minutes). The catalyst is removed on a fine sintered glass funnel and the filtrate is taken to dryness. Crystallization from ethyl acetate/methylene chloride/Skellysolve® B hexanes gives 2.66 g (57%) of 1-[(p-aminophenyl)-sulfonyl]-4-(o-methylphenyl)piperazine.