反应详情

2-[2-(Methylthio)-6-pyrimidinyl]-4H-1,3-benzothiazine-4-one (0.30 g, 1.50 mmol) was dissolved in chloroform (100 ml), and a solution of 3-chloroperbenzoic acid (ca. 77%, 0.23 g, 1.50 mmol) in chloroform (10 ml) was added dropwise thereto. The mixture was stirred at room temperature for 1 hr. The solvent was evaporated, and the residue was recrystallized from ethanol to give the titled compound (0.18 g, 55%) as pale yellow crystals.

1. customThe solvent was evaporated
2. customthe residue was recrystallized from ethanol