1-(2,6-diisopropylphenyl)-4-(2,5-di-tert-butyl-3,4-dihydroxyphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene 在
lead dioxide 作用下,
以
乙醚 为溶剂,
以33%的产率得到1-(2,6-diisopropylphenyl)-4-(2,5-di-tert-butylcyclohexadiene-1,5-dion-3,4-yl)-2,3-dimethyl-1,4-diazabuta-1,3-diene