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3. The substituted benzimidazole 8 undergoes a nucleophilic addition reaction with the enolate anion generated from diethyl malonate 7. Write out a step by step

3. The substituted benzimidazole 8 undergoes a nucleophilic addition reaction with the enolate anion generated from diethyl malonate 7. Write out a step by step reaction mechanism for both the enolate formation and its nucleophilic addition to 8. In doing so identify the structure of the reaction product 9 and explain why the reaction proceeds in good yield by including the appropriate resonance structures in your mechanism.

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The substituted benzimidazole 8 undergoes a nucleophilic addition reaction with the enolate anion generated from diethyl malonate 7. Write out a step by step reaction mechanism for both the enolate formation and its nucleophilic addition to 8 . In doing so identify the structure of the reaction product 9 and explain why the reaction proceeds in good yield by including the appropriate resonance structures in your mechanism

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