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- Please explain the following clearly. 1.Benzene undergoes electrophilic aromatic Substitution rxns. Why is that? 2. Giving and example and mechanisms, explain the aromatic Substitution reactions.r Plase don't provide handwritten solution Write carbonyl compound & phosphonium ylide that yield below alkene upon reactionWhen naphthalene undergoes an irreversible electrophilic aromatic substitution, such as a Friedel–Crafts acylation, the major product is the kinetic product,which proceeds through the most stable arenium ion intermediate. InSection 23.7, we mentioned that substitution is generally favored at the αposition over the β position, which means that the arenium ion is more stable when the electrophile attaches to the α position. Explain this difference in arenium ion stabilities. Hint: Draw out allresonance structures for each arenium ion intermediate. Does each one have the same number of resonancestructures? How many resonance structures of each intermediate preserve the aromaticity?
- Fluoride ion is usually a poor leaving group because it is not very polarizable. Fluorideserves as the leaving group in the Sanger reagent (2,4-dinitrofluorobenzene), used inthe determination of peptide structures (Chapter 24). Explain why fluoride works as aleaving group in this nucleophilic aromatic substitution, even though it is a poor leavinggroup in the SN1 and SN2 mechanisms.From 1 being the slowest and 4 being the fastest rank the aromatic hydrocarbons in terms of increasing raters of nitration via electrophilic aromatic substitutionProvide mechanism with curved arrows for Part C: Synthesis of tetraphenylcyclopentadienone
- A4 Express the retro synthesis scheme using the suggested starting material (SM) for the following target compound (TM). After performing the retro synthesis analysis, synthesize the target compound according to the analyzed scheme.Proposed a suitable mechanism of the following reaction:Please explain the synthesis. Identify SN1, SN2, E1, E2, nucleophiles and ekectrophiles.