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CH(3)CHOoverset(NH(2)-NH(2))rarr[A]overs...

`CH_(3)CHOoverset(NH_(2)-NH_(2))rarr[A]overset(KOH)rarr[B]overset(Br_(2)//hv)rarr[C]overset("KOH(alc)")rarr[D]`
Identify D

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To solve the given reaction sequence step by step, let's break down each part of the process: ### Step 1: Reaction of CH₃CHO with NH₂NH₂ - **Starting Compound:** CH₃CHO (acetaldehyde) - **Reagent:** NH₂NH₂ (hydrazine) - **Reaction Type:** Wolff-Kishner reduction - **Product A:** When acetaldehyde reacts with hydrazine, it forms a hydrazone intermediate, which upon heating leads to the removal of water and reduction to form ethane (C₂H₆). ...
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