反应详情

4-Bromo-3-methoxyisothiazole (8.0 g, 0.041 mol) and 10 ml of methyl fluorosulfonate were heated at 90° for 45 min. After cooling, the solid was washed with ether to yield 10.3 g (81%) of 4-bromo-3-methoxy-2-methylisothiazolium fluorosulfonate, mp 180°-182° C.

1. temperatureAfter cooling
2. washthe solid was washed with ether