Phosphorus sulfide (P2S5) → 4-(6-Chloronaphthalene-2-sulfonyl)-1-[1-(4-pyridyl)-4-piperidinylamino}-2-thioxopiperazine

Participants

Reaction Conditions

Reaction Steps

A solution of 4-(6-chloronaphthalene-2-sulfonyl)-1-[1-(4-pyridyl)-4-piperidinylamino}-2-piperazinone (200 mg) in pyridine (10 ml) was combined with phosphorus pentasulfide (80 mg) and stirred at 100° C. for 5 hours. The supernatant of the reaction mixture was concentrated and the residue was purified by a column chromatography on a silica gel (dichloromethane: 10% aqueous ammonia-containing methanol=20:1) to obtain the title compound (35 mg) as a colorless solid.

Provenance & Evidence