1-(4-Fluorophenyl)-4-[(4-nitrophenyl)sulfonyl]piperazine → HCID 21314924, compound

Participants

Reaction Steps

A mixture of 5.00 g (0.0137 m) of 1-[(p-nitrophenyl)sulfonyl]-4-(p-fluorophenyl)piperazine, 0.2 g of platinum oxide, and 150 ml of chloroform is shaken under hydrogen on a Parr hydrogenation apparatus for one hour. The mixture is then filtered through a sintered glass funnel containing activated carbon and sand to remove the catalyst. The filtrate is concentrated in vacuo and then extracted with methylene chloride/aqueous sodium bicarbonate. The organic layer is filtered through anhydrous sodium sulfate and taken to dryness. The residue is crystallized from methanol to give 2.16 g of 1-[(p-aminophenyl)sulfonyl]-4-(p-fluorophenyl)piperazine containing a minor impurity. Recrystallization from methanol gives an analytical sample with a melting point of 180.5°-181.5° C.

Provenance & Evidence