4-(5-bromo-2-methylbenzyl)-5-hydroxymethyl-2-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one 在
manganese dioxide
氮 作用下,
以
氯仿 为溶剂,
反应 3.0h,
以to obtain 5.04 g (16.3 mmol) of 4-(5-bromo-2-methylbenzyl)-5-formyl-2-methyl-2,4-dihydro-3H-1,2, 4-triazol-3-one having a melting point of 107.5° C.的产率得到4-(5-bromo-2-methylbenzyl)-5-formyl-2-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one