What reagents are required to carry out the following synthesis?

What reagents are required to carry out the following synthesis?

Identify A–J:

Identify A–J:

Identify A–J:

The pK_a values of a few ortho-, meta-, and para-substituted benzoic acids are shown below:

The relative pK_a values depend on the substituent. For chloro-substituted benzoic acids, the ortho isomer is the most acidic and the para isomer is the least acidic; for nitro-substituted benzoic acids, the ortho isomer is the most acidic and the meta isomer is the least acidic; and for amino-substituted benzoic acids, the meta isomer is the most acidic and the ortho isomer is the least acidic.

Explain these relative acidities.

a. Cl: ortho > meta > para

The pK_a values of a few ortho-, meta-, and para-substituted benzoic acids are shown below:

The relative pK_a values depend on the substituent. For chloro-substituted benzoic acids, the ortho isomer is the most acidic and the para isomer is the least acidic; for nitro-substituted benzoic acids, the ortho isomer is the most acidic and the meta isomer is the least acidic; and for amino-substituted benzoic acids, the meta isomer is the most acidic and the ortho isomer is the least acidic. Explain these relative acidities.

c. NH₂: meta > para > ortho

Propose a mechanism for each of the following reactions:

a.

Propose a mechanism for each of the following reactions:

b.

When heated with chromic acid, compound A forms benzoic acid. Identify compound A from its ¹H NMR spectrum.

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Show how the following compounds can be prepared from benzene:

c.

How can you distinguish the following compounds using: a. their infrared spectra?

Propose a mechanism for the following reaction that explains why the configuration of the asymmetric center in the reactant is retained in the product:

Propose a mechanism for each of the following reactions:

b.

Describe how 3-methyl-1-phenyl-3-pentanol can be prepared from benzene. You can use any inorganic reagents and solvents, and any organic reagents provided they contain no more than two carbons.

a. Explain why the following reaction leads to the products shown:

Explain why hydroxide ion catalyzes the reaction of piperidine with 2,4-dinitroanisole but has no effect on the reaction of piperidine with 1-chloro-2,4-dinitrobenzene.

Tyramine is an alkaloid found in mistletoe and ripe cheese. Dopamine is a neurotransmitter involved in the regulation of the central nervous system.

a. How can tyramine be prepared from b-phenylethylamine?

Tyramine is an alkaloid found in mistletoe and ripe cheese. Dopamine is a neurotransmitter involved in the regulation of the central nervous system.

b. How can dopamine be prepared from tyramine?

Tyramine is an alkaloid found in mistletoe and ripe cheese. Dopamine is a neurotransmitter involved in the regulation of the central nervous system.

c. Give two ways to prepare b-phenylethylamine from b-phenylethyl chloride.

Tyramine is an alkaloid found in mistletoe and ripe cheese. Dopamine is a neurotransmitter involved in the regulation of the central nervous system.

d. How can b-phenylethylamine be prepared from benzyl chloride?

Tyramine is an alkaloid found in mistletoe and ripe cheese. Dopamine is a neurotransmitter involved in the regulation of the central nervous system.

e. How can b-phenylethylamine be prepared from benzaldehyde?

Ibuprofen is the active ingredient in pain relievers such as Advil, Motrin, and Nuprin. How can ibuprofen be synthesized from benzene?

Acetaminophen is the active ingredient in Tylenol. How can acetominophen be synthesized from benzene?