反应详情

To the product from step A (190 mmol, 44 g) in THF (200 mL) was added aqueous HCl solution (300 mmol, 100 mL). The reaction was stirred over 2 days and extracted using diethyl ether. The aqueous layer was then neutralized using aqueous NaOH (50%) to obtain a pH of 11 and extracted using EtOAc (6×300 mL). The organic layers were combined and dried over MgSO4 and concentrated in vacuo. The residue was purified via flash chromatography on silica to afford the desired ketone (18 g, 49%). MS (M+H)+193.1.

1. extractionextracted
2. customto obtain a pH of 11
3. extractionextracted
4. dry with materialdried over MgSO4
5. concentrationconcentrated in vacuo
6. customThe residue was purified via flash chromatography on silica