反应详情

温度

70 °C

(R)-1-[4-(3-Fluoro-benzyloxy)-phenyl]-N-hydroxy-5-oxo-pyrrolidine-3-carboxamidine (0.020 g, 0.58 mmol) was dissolved in a mixture of 0.4 ml pyridine and acetyl chloride (0.01 ml, 0.116 mmol) was slowly added at 0° C. The mixture was then stirred at 70° C. overnight. Iced water was added and the mixture was stirred for one hour. Extraction with a saturated solution of ammonium chloride and dichloromethane gave the crude product that was purified by column cromatography on silica gel using a 19:1-mixture of dichloromethane and methanol as the eluent to obtain the title compound as a light yellow solid (0.0197 g, 92% of theory). MS (m/e)=368.4 (M+H)+.

1. additionwas slowly added at 0° C
2. stirringthe mixture was stirred for one hour
3. extractionExtraction with a saturated solution of ammonium chloride and dichloromethane
4. customgave the crude product that
5. customwas purified by column cromatography on silica gel using a 19