4-Toluenesulfonyl chloride → 1-Acetyl-4-(2-chloroethyl)piperazine

Beteiligte Stoffe

Reaktionsschritte

2-(4-Acetylpiperazin-1-yl)ethanol (500 mg, 2.90 mmol), (prepared as described for the starting material in this example hereinbefore), was dissolved in methylene chloride (10 ml) and triethylamine (445 μl, 3.19 mmol) and 4-toluenesulphonyl chloride (609 mg, 3.19 mmol) were added and the mixture was stirred at ambient temperature overnight. The mixture was washed with brine, dried (MgSO4) and concentrated under reduced pressure. The residue was purified by column chromatography eluting with methylene chloride/methanol (98/2) to give 1-acetyl-4-(2-chloroethyl)piperazine (300 mg, 54%) as an oil.

Herkunft & Nachweise