反应详情

6-(4-Aminophenyl)-5-methyl-4,5-dihydro-1,2,4-triazin-3(2H)-one (5 g) was reacted with N-bromosuccinimide (4.36 g) in the same manner as Example 12 to give 6-(4-amino-3-bromophenyl)-5-methyl-4,5-dihydro-1,2,4-triazin-3(2H)-one (5.76 g).