反应详情

To a solution of 5-(6-benzyloxymethyl-pyrimidin-4-yloxy)-1H-indole (12 g, 36.2 mmol) in THF (300 mL), NaH (1.74 g, 43.5 mmol) and acetic anhydride (5.13 mL, 54.3 mmol) are added. After 1 h the reaction is quenched with aqueous ammonium chloride and extracted with EtOAc. Most of the impurities are removed passing it through a silica gel column eluting with 50:50 heptane:EtOAc to give crude 1-[5-(6-benzyloxymethyl-pyrimidin-4-yloxy)-indol-1-yl]-ethanone. This is then dissolved in TFA (300 mL) and heated to 100° C. for 6 hours. At this point the solvent is removed and 1-[5-(6-hydroxymethyl-pyrimidin-4-yloxy)-indol-1-yl]-ethanone isolated via FCC eluting with EtOAc. MS (ESI) m/z 284.0 (M+1).

1. customAfter 1 h the reaction is quenched with aqueous ammonium chloride
2. extractionextracted with EtOAc
3. customMost of the impurities are removed
4. washeluting with 50:50 heptane