Triethylamine → 1-(4-Diethylaminobenzoyl)-4-(2-naphthalenesulfonyl)piperazine

Participants

Reaction Steps

To a solution of 1-(2-naphthalenesulfonyl)piperazine hydrochloride (625 mg) and 4-diethylamino benzoic acid (386 mg) in DMF (12 ml) was added diethyl phosphorocyanidate (489 mg) and then triethylamine (606 mg), and the solution was stirred at room temperature for 2 hours. The reaction solution was concentrated and the residue was purified with silica gel column chromatography (dichloromethane:10% ammonia containing methanol=20:1) to give colorless amorphous of the title compound (250 mg).

Provenance & Evidence