反应详情

A mixture of tert-butyl methyl[6-(4-oxo-4H-1,3-benzothiazin-2-yl)-2-pyridyl]carbamate (0.60 g, 1.6 mmol) and trifluoroacetic acid (8 ml) was stirred at room temperature for 1 hr. The reaction mixture was concentrated under reduced pressure to give crystals, which were recrystallized from methanol-diethyl ether to give the titled compound (0.33 g, 74%).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. customto give crystals, which
3. customwere recrystallized from methanol-diethyl ether