反应详情

1M solution of tetra-butylammonium fluoride in THF (0.54 mL, 0.54 mmol) was added to a stirred solution of 2-[(4-{[tert-butyl(dimethyl)silyl]oxy}phenoxy)methyl]-5-[(4-fluorophenyl)carbonyl]-4,5,6,7-tetrahydro[1,3]oxazolo[5,4-c]pyridine (264 mg, 0.36 mmol) in THF (2 mL). The mixture was stirred at room temperature for 16 hours. The mixture was treated with water and extracted with AcOEt. The organic layer was separated, dried (MgSO4), filtered and the solvents evaporated in vacuo. The crude product was purified by flash column chromatography (silica; AcOEt in DCM 0/100 to 100/0). The desired fractions were collected and the solvents evaporated in vacuo. The product was triturated with DIPE to yield (4-({5-[(4-fluorophenyl)carbonyl]-4,5,6,7-tetrahydro[1,3]oxazolo[5,4-c]pyridin-2-yl}methoxy)phenol (60 mg, 45% yield) as a white solid. C20H17FN2O4 1H NMR (400 MHz, CDCl3) δ ppm 2.72 (br. s., 2 H), 3.69 (br. s, 2 H), 4.78 (br.s., 2 H), 5.05 (br. s., 2 H), 5.86 (br. s., 1 H), 6.74 (d, J=8.8 Hz, 2 H), 6.86 (d, J=8.8 Hz, 2 H), 7.09-7.18 (m, 2 H), 7.43-7.51 (m, 2 H).

1. extractionextracted with AcOEt
2. customThe organic layer was separated
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. customthe solvents evaporated in vacuo
6. customThe crude product was purified by flash column chromatography (silica; AcOEt in DCM 0/100 to 100/0)
7. customThe desired fractions were collected
8. customthe solvents evaporated in vacuo
9. customThe product was triturated with DIPE