反应详情

60a obtained in the previous step was dissolved in acetonitrile (4 mL) and treated with Na2S2O3 (0.42 g) in 1N NaOH (4 mL). After 20 h, the mixture was poured in water and extracted with EtOAc twice. The combined extracts were dried and concentrated to afford the crude 60b.

1. extractionextracted with EtOAc twice
2. customThe combined extracts were dried
3. concentrationconcentrated