反应详情

温度

0 °C

To a solution of (2R,5S)-2-aminomethyl-5-(3-trifluoromethoxy-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester (200 mg), and Et3N (77 μL, 0.55 mmol) in CH2Cl2 (3 mL) was added under nitrogen atmosphere at 0° C. acetyl chloride (39 μL, 0.55 mmol) and the mixture was stirred at 0° C. for 1 h. CH2Cl2 and 1N aqueous HCl were added, the layers were separated and the aqueous one back-extracted with CH2Cl2. The combined organic extracts were washed with brine, dried over Na2SO4, filtered and concentrated. The crude residue was purified by flash column chromatography on silica gel (c-hexane/EtOAc gradient 100:0 to 0:100) to give the title compound. MS (LC/MS): 480.1 [M+H]+; tR (HPLC conditions b): 4.69 min.

1. customthe layers were separated
2. extractionthe aqueous one back-extracted with CH2Cl2
3. washThe combined organic extracts were washed with brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. customThe crude residue was purified by flash column chromatography on silica gel (c-hexane/EtOAc gradient 100:0 to 0:100)