反应详情

温度

0 °C

tert-Butyl 3-[2-(7-fluoro-4-oxo-4H-1,3-benzothiazin-2-yl)-4-pyridyl]propanoate (0.92 g, 2.3 mmol) was dissolved in trifluoroacetic acid (10 ml), and the mixture was stirred at 0° C. for 2 hrs. The solvent was evaporated, and the residue was recrystallized from diisopropyl ether-methanol to give the titled compound (0.56 g, 71%) as white crystals.

1. customThe solvent was evaporated
2. customthe residue was recrystallized from diisopropyl ether-methanol