反应详情

To a solution of [1-(2-{[tert-butyl(dimethyl)silyl]oxy}-1,1-dimethylethyl)-1H-pyrrolo[3,2-c]pyridin-3-yl]{4-[(diphenylmethylene)amino]pyridin-2-yl}methanone (Preparation 35, 1.4 g, 2.38 mmol) in THF (3 mL) was added a 1M solution of citric acid (2.5 g, 11.9 mmol) and the reaction was stirred at room temperature for 4 hours. A 10% aqueous solution of potassium carbonate was added carefully, and the mixture extracted into EtOAc (3×50 mL). The organic layers were combined, dried over MgSO4 and concentrated in vacuo. To the residue was added DCM and a solid precipitated that was filtered and dried. The mother liquors were purified using silica gel column chromatography eluting with 100% heptanes to 100% EtOAc to 5% MeOH in EtOAc to afford further material. The solids were combined to afford the title compound (70%, 710 mg).

1. extractionthe mixture extracted into EtOAc (3×50 mL)
2. dry with materialdried over MgSO4
3. concentrationconcentrated in vacuo
4. additionTo the residue was added DCM
5. customa solid precipitated that
6. filtrationwas filtered
7. customdried
8. customThe mother liquors were purified
9. washeluting with 100% heptanes to 100% EtOAc to 5% MeOH in EtOAc
10. customto afford further material