Pyridine → Methyl 3-pentanamidobenzoate

Beteiligte Stoffe

Reaktionsschritte

To anhydrous pyridine (120 ml), methyl 3-aminobenzoate (5.00 g) was dissolved, and valeryl chloride (4.13 ml) was added while cooling on ice. The mixture was stirred at room temperature for 4 hours. Distilled water was added to the solution. The whole was extracted with ethyl acetate, washed with 5% sodium hydrogencarbonate aqueous solution and water, and dried over anhydrous sodium sulfate. The solvent was evaporated, and the residue was purified by silica gel column chromatography (Kieselgel 60=170 g, hexane/ethyl acetate=3/1) to obtain the above-captioned compound ([6]-(62)-90) (7.70 g) as a white solid.

Herkunft & Nachweise