反应详情

To a stirred solution of methyl N-[(pent-4-enyloxy)carbonyl]-L-norleucinate (8.50 g, 33.03 mmol) in THF (20 mL) was added 1N NaOH (20 mL). This reaction solution was stirred at room temperature for 3 h, then acidified to pH 3 with 1N HCl and extracted with (3×250 mL) EtOAc. The combined EtOAc layer was washed with 50 mL water, 50 mL brine, dried over sodium sulfate, filtered and concentrated to give 7.09 g (88% yield) of the title product as clear oil. LRMS (ESI) m/z 244 [(M+H)+; calcd for C12H22NO4: 244].

1. extractionextracted with (3×250 mL) EtOAc
2. washThe combined EtOAc layer was washed with 50 mL water, 50 mL brine
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated