1-Chloro-2-(diethylamine)ethane hydrochloride → Diethyl [2-(4-imidazol-1-yl-phenoxy)ethyl]amine

Beteiligte Stoffe

Reaktionsschritte

Dissolve 4-(1H-imidazol-1-yl)phenol (4.02 g, 25.1 mmol) in methanol (100 mL) containing potassium hydroxide (3.52 g, 62.74 mmol). Add 2-diethylaminoethyl chloride hydrochloride to this mixture and heat to reflux under nitrogen overnight. Cool the mixture and concentrate in vacuo. Dissolve the residue in water (50mL) and adjust the pH to 13 with 1N NaOH solution. Wash with 2×100 mL of methylene chloride, combine, dry (Na2SO4) and concentrate in vacuo. This residue is dissolved in ethanol and 37% hydrochloric acid is added until pH=1.0. Concentration affords crystals which are recrystallized from isopropanol/ethanol (ca. 4+1). Drying at 80° C. for 5 hr at 1.0 mm give the title compound.

Herkunft & Nachweise