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The formation of 6 from 5 is achieved using hydrazine (H 2 NNH 2 ) in acetic acid. Like the Shapiro reaction, the reaction goes

The formation of 6 from 5 is achieved using hydrazine (H2NNH2) in acetic acid. Like the Shapiro reaction, the reaction goes through a vinyl anion intermediate. Propose a mechanism for this reaction.(You may use R groups to abbreviate if necessary)

LOH mechanism? 5 vinyl anion intermediate 6

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