反应详情

A solution of 3-benzyloxy-1-cyclopropyl-6-fluoro-7-pyrrolidin-1-yl-1H-quinazoline-2,4-dione (Example F-3, 0.15 g, 0.38 mmol) in trifluoroacetic acid (TFA, 3.0 mL) was reacted with a 1.0 M solution of boron tris(trifluoroacetate) (1.5 mL, 1.5 mmol, Angew. Chem, Internat. Ed., 1973;12:147) in TFA and allowed to stir for 2 hours. The mixture was then concentrated and the residue diluted in methanol and concentrated. This process was repeated two times. The residue was then triturated from diethyl ether/hexanes and filtered to provide 0.073 g of the title compound as solid, mp 248-250° C. (dec.).

1. concentrationThe mixture was then concentrated
2. additionthe residue diluted in methanol
3. concentrationconcentrated
4. customThe residue was then triturated from diethyl ether/hexanes
5. filtrationfiltered