The dehydrogenation product of 5-keto-1,3,4,5-tetrahydrobenz(cd)indole (II) is shown to be the resonance hybrid 5-keto-1,2-dihydro-benz(cd)indole (III ⟷ IIIa) rather than 5-hydroxybenz(cd)-indole (IVa), a potential tautomer.
5-酮-1,3,4,5-四氢苯并(cd)
吲哚(II)的脱氢产物显示为共振杂合5-酮-1,2-二氢苯并(cd)
吲哚(IIIIIIIIIa ),而不是潜在的互变异构体5-羟基苯并(cd)-
吲哚(IVa)。