1-Phenylpiperazine → HCID 10293924, compound

Participants

Reaction Steps

About 3 min after dissolving 3-[3-(3-nitrophenyl)isoxazol-5-yl]propanal (20 mg, 0.09 mmol) and 1-phenylpiperazine (13.4, 0.09 mmol) in 2 mL of dry methylene chloride, were added NaBH(OAc)3 (56 mg, 0.26 mmol) and molecular sieves (5 beads). After the reaction was carried out for about 22 hr, the reaction mixture was diluted with ethyl acetate and washed with saturated NaHCO3 solution saturated sodium chloride solution. After drying the organic layer over anhydrous MgSO4, the solvent was removed under reduced pressure. After dissolving the residue with 1 mL of diethyl ether, HCl ether solution was slowly dropped to precipitate a white hydrochloric acid salt which was collected by filtration or centrifugation, and it was washed several times with diethyl ether. After drying the same under reduced pressure, was obtained 18.1 mg (56.8%) of the target compound.

Provenance & Evidence