The Birch reduction of benzoic acid gives:

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(A) The Birch reduction of benzoic acid involves the reduction of the aromatic ring using an alkali metal (like $Na$ or $Li$) in liquid ammonia $(NH_3

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$1,4-$cyclohexadiene$-1-$carboxylic acid

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(A) The Birch reduction of benzoic acid involves the reduction of the aromatic ring using an alkali metal (like $Na$ or $Li$) in liquid ammonia $(NH_3)$ in the presence of an alcohol.For electron-withdrawing groups like $-COOH$,the reduction typically results in $1,4$-dihydro products.Specifically,the Birch reduction of benzoic acid yields $1,4$-cyclohexadiene$-1-$carboxylic acid.

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