2-(5-Methoxy-cyclohexa-2,4-dienyl)-2-methyl-propionitrile 、
2-(5-Methoxy-cyclohexa-1,5-dienyl)-2-methyl-propionitrile 、
4-苯基-1,2,4-三唑啉-3,5-二酮 生成 2-(8-methoxy-1,3-dioxo-2-phenyl-2,3,5,8-tetrahydro-1
H-5,8-ethano-[1,2,4]triazolo[1,2-
a]pyridazin-6-yl)-2-methyl-propionitrile