Ammonia → 3-(Piperazin-1-yl)benzamide

Participants

Reaction Steps

1-(3-Cyanophenyl)piperazine (1.6 g, 8.3 mmol) was dissolved in 90% sulfuric acid aqueous solution (17 ml) and stirred at a room temperature for 2 days. The reaction solution was slowly added drbpwise to a mixture consisting of ice (65 g) and 28% aqueous ammonia (65 ml), and the reaction product was extracted with chloroform. The resulting extract was washed with saturated brine and dried with sodium sulfate, and then the solvent was evaporated under a reduced pressure to obtain 990 mg of the title compound (4.9 mmol, 58% in yield).

Provenance & Evidence