1,4-Dioxaspiro[4.5]decan-8-one (cyclohexane-1,4-dione mono(ethylene ketal)) is heated with NH2NH2 and KOH in ethylene glycol at 200 degC. The product is

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1,4-Dioxaspiro[4.5]decan-8-one (cyclohexane-1,4-dione mono(ethylene ketal)) is heated with $NH X_{2} NH X_{2}$ and KOH in ethylene glycol at $200^{\circ} C$ . The product is

A1,4-dioxaspiro[4.5]decane
Bcyclohexanone
Ccyclohexane-1,4-diol
Dcyclohexane

Answer: A

The remaining ketone is converted to a

CH X_{2}

by Wolff-Kishner reduction. The ketal is stable to the strongly basic conditions, so it survives (Clemmensen conditions with conc. HCl would remove it).

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1,4-Dioxaspiro[4.5]decan-8-one (cyclohexane-1,4-dione mono(ethylene ketal)) is heated with NHX2​NHX2​ and KOH in ethylene glycol at 200 ∘C. The product is

Answer: A

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1,4-Dioxaspiro[4.5]decan-8-one (cyclohexane-1,4-dione mono(ethylene ketal)) is heated with $NH X_{2} NH X_{2}$ and KOH in ethylene glycol at $200^{\circ} C$ . The product is