反应详情

To a stirred solution of 6-nitrobenzothiazole (30 g, 0.1665 mol) in ethanol (500 mL) is added 100% hydrazine hydrate (60.2 mL, 1.931 mol). The mixture is refluxed for 2 h at which time the solution turns red. The reaction is quenched by the addition of ice cold conc. HCl until the red color disappears. The resulting solid is filtered, washed with water (25 mL) and dried under high vacuum to give the title compound as a yellow solid (28.96 g, 84%), MS m/z 171.5 (M+H)+.

1. temperatureThe mixture is refluxed for 2 h at which time the solution
2. customThe reaction is quenched by the addition of ice cold conc. HCl until the red color
3. filtrationThe resulting solid is filtered
4. washwashed with water (25 mL)
5. customdried under high vacuum