CO,H Li(s), ROH NH3(4) PROBLEM 25.24 The Birch reduction of a monosubstituted Sub Sub Sub benzene can produce two isomeric products, as shown. Which one is the major product depends on whether the substituent is electron donating or electron withdrawing (see Problems 25.60 and 25.61 at the end of the chapter). Draw the mechanism that leads to each product. Li(s), ROH NH3(4)

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Chapter1: Chemical Foundations
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There are two isomeric cyclohexa-1,4-diene products when benzoic acid undergoes the Birch reduction (see Problem 25.24).

(a) Draw the mechanism that leads to
the formation of the major product.

(b) Will the Birch
reduction of benzoic acid occur faster or slower than the
Birch reduction of benzene itself?

Hint: Is –CO2H an
electron-donating or an electron-withdrawing group?

CO,H
Li(s), ROH
NH3(4)
Transcribed Image Text:CO,H Li(s), ROH NH3(4)
PROBLEM 25.24 The Birch reduction of a monosubstituted
Sub
Sub
Sub
benzene can produce two isomeric products, as shown. Which
one is the major product depends on whether the substituent is
electron donating or electron withdrawing (see Problems 25.60
and 25.61 at the end of the chapter). Draw the mechanism that
leads to each product.
Li(s), ROH
NH3(4)
Transcribed Image Text:PROBLEM 25.24 The Birch reduction of a monosubstituted Sub Sub Sub benzene can produce two isomeric products, as shown. Which one is the major product depends on whether the substituent is electron donating or electron withdrawing (see Problems 25.60 and 25.61 at the end of the chapter). Draw the mechanism that leads to each product. Li(s), ROH NH3(4)
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