Piperazine → HCID 57059596, compound

Participants

Reaction Steps

2.36 g of N-(11-hydroxy-1-undecanyl)-6-chloronicotinamide and 3.15 g of piperazine were suspended in 50 ml of toluene and the suspension was stirred at 120°-130° C. for 5 hrs. This reaction mixture was concentrated and the residue was purified by silica gel column chromatography (chloroform:methanol=5:1) to obtain quantitatively N-(11-hydroxy-1-undecanyl)-6-piperazinylnicotinamide. This compound was added under ice-cooling to 10 ml of fuming nitric acid and the mixture was stirred below 5° C. for 4 hrs. This reaction mixture was poured into an aqueous sodium hydrogencarbonate, extracted with methylene chloride, washed with water and a saturated sodium chloride solution, dried over anhydrous magnesium sulfate and concentrated. The concentrate was purified by silica gel column chromatography (chloroform:methanol=5:1) and recrystallized from chloroform/hexane to give 0.5 g (15%) of the title compound.

Provenance & Evidence