反应详情

5-amino-2-cyanopyridine (2 g) was added to a 48% aqueous hydrogen bromide solution (14 mL). Bromine (2.2 mL) was added to the solution at 0° C. The reaction mixture was warmed to room temperature and stirred for six hours. The precipitated solid was collected by filtration to give the title compound (4.5 g).

1. filtrationThe precipitated solid was collected by filtration