Which of the following aromatic rings will undergo nucleophilic aromatic substitution the fastest? There are two mechanisms through which nucleophilic aromatic substitution can be achieved Label the following reactions according to which mechanistic pathway is dominant for each. What key feature would allow you to predict that 5-fluoro-enitrotoluene would provide a cleaner reaction. (fewer products than 3 chlorotoluene, upon treatment with sodium amide(NaNH_2) Briefly explain. Provide the mechanism and major product of the following Birch reduction.