4-Chlorobenzenesulfonyl chloride → 1H-1,4-Diazepine, 1-[(4-chlorophenyl)sulfonyl]hexahydro-

Participants

Reaction Steps

The 1-(4-chlorophenylsulphonyl)homopiperazine was prepared as follows. 4-Chlorophenylsulphonyl chloride (3.74 g) in dichloromethane (100 ml) was added slowly to a solution of homopiperazine (6.73 g) in dichloromethane (100 ml). The reaction was stood at room temperature overnight. The reaction was washed with water, dried (MgSO4) and the solvent removed in vacuo. The residue was triturated with 20% ether in hexane to give 1-(4-chlorophenylsulphonyl)homopiperazine (3.71 g); NMR (DMSOd6): 1.65 (m, 2H), 2.73 (m, 4H), 3.2-3.65 (m 4H), 7.7 (m, 2H), 7.8 (m, 2H).

Provenance & Evidence