反应详情

温度

0 °C

24 mg of (1-benzyl-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)-acetic acid methyl ester (p) prepared by the above Step 2 was dissolved in methanol solution (0.1 mmol) and then 1.7 M methanolic suspension solution containing NH2OK (0.4 ml, 0.68 mmol) was added thereto at 0° C. and the resulting mixture was stirred for 4 hrs at room temperature. The resulting mixture was neutralized with 0.02 ml of acetic acid, diluted with 10% methanol/chloroform solution, filtered and concentrated in vacuo. The resulting compound was purified by Silica gel column chromatography with a solvent mixture mixed with methanol and chloroform (1:9) as an eluant to give 12 mg of 2-(1-benzyl-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)-N-hydroxy-acetamide (q) (yield: 48%).

1. additionwas added
2. filtrationfiltered
3. concentrationconcentrated in vacuo
4. customThe resulting compound was purified by Silica gel column chromatography with a solvent mixture
5. additionmixed with methanol and chloroform (1:9) as an eluant