反应详情

Into a 500-mL 4-necked round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed a solution of 2-(2-aminoethyl)quinazoline-4-carboxylic acid (3.2 g, 14.73 mmol, 1.00 equiv) in tetrahydrofuran (32 mL). This was followed by the addition of acetyl acetate (32 mL) dropwise with stirring at room temperature. The resulting solution was stirred for 18 h at room temperature. The reaction was then quenched by the addition of 50 mL of water. The mixture was concentrated under vacuum. The crude product was purified by Flash. This resulted in 900 mg (24%) of 2-(2-acetamidoethyl)quinazoline-4-carboxylic acid as a white solid. MS (ESI) m/z 260 ([M+H]+).

1. customInto a 500-mL 4-necked round-bottom flask purged
2. temperaturemaintained with an inert atmosphere of nitrogen
3. stirringThe resulting solution was stirred for 18 h at room temperature
4. customThe reaction was then quenched by the addition of 50 mL of water
5. concentrationThe mixture was concentrated under vacuum
6. customThe crude product was purified by Flash
7. customThis resulted in 900 mg (24%) of 2-(2-acetamidoethyl)quinazoline-4-carboxylic acid as a white solid