Potassium Carbonate → (E)-N-(2-hydroxyphenethyl)-3-(3-pyridyl)-2-propenoic acid amide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Trans-3-(3-pyridyl)acrylic acid (22.35 g) and N,N′-carbonyldiimidazole (24.54 g) were dissolved in dimethylformamide (300 ml) and stirred at 40° C. for 40 minutes. Then, potassium carbonate (41.4 g) and 2-hydroxyphenethylamine hydrobromide (32.70 g) were added under room temperature and stirred for 1 hour. Insoluble materials were filtered out and the filtrate was concentrated under reduced pressure. Dilute hydrochloric acid was added to the residue under ice-cooling and stirring. The precipitated crystal was filtered out, washed with water, purified by silica gel column chromatography (chloroform:methanol=20:1) and then recrystallized in methanol to yield the titled compound (24.98 g, 62%).

Herkunft & Nachweise