5-benzhydryl-[1,2,5]triazepane-3,7-dione 、
6-甲基-2-吡啶甲醛 以
苯 为溶剂,
反应 4.0h,
以a reaction time of 4 hours to afford 1-diphenylmethyl-4-(6-methyl-2-pyridylmethyleneamino)-3,5-diketopiperazine的产率得到4-benzhydryl-1-(6-methyl-pyridin-2-ylmethyleneamino)-piperazine-2,6-dione