Organic chemistry mechanism and conceptual problems, Ask an Expert

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Organic chemistry mechanism and conceptual problems involving

1. Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids.

2. Give a reasonable explanation of why nitration of 1,4-dichloro-benzene yields the mononitro derivative while N,N'-diacetyl 1,4-phenylenediamine forms the dinitro compound.

3. Explain why p-nitrophenol is a stronger acid than phenol itself. Would p-methoxyphenol be a stronger or weaker acid than phenol? Explain.

5. 2,3-Dimethyl-2,3-butanediol (pin a co/) , upon heating in aqueous acid, rearranges to form 3,3-dimethyl-2-butanone (pinacolone). Suggest a mechanism for this reaction.

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