Water → 1-(5-Bromo-3-(tert-butyl)-2-methoxyphenyl]piperazine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

5-Bromo-3-(tert-butyl)-2-methoxyaniline (311 g) and bis(2-chloroethyl)amine hydrogenchloride (251 g) were suspended in 4 L of 1,2-dichlorobenzene, and the mixture was vigorously stirred for 22 hours at an external temperature of 200° C. The mixture was cooled to room temperature, and then potassium carbonate (620 g) and water were added and extraction was performed with methylene chloride (6 L). After drying over magnesium sulfate, the solvent was distilled off under reduced pressure to yield a black oil (460 g). Purification was performed by NH-silica gel column chromatography (solvent: n-hexane-ethyl acetate) to yield the title compound (161 g) as blackish purple solid (41%).

Herkunft & Nachweise