Name: Organic Chemistry
Author: Wade
ISBN: 9780135213728

Ch.10 - Structure and Synthesis of Alcohols

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Wade 9th Edition

Ch.10 - Structure and Synthesis of Alcohols

문제 40c

Show how you would accomplish the following transformations. You may use any additional reagents you need.

(c)

문제 40d

Show how you would accomplish the following transformations. You may use any additional reagents you need.

(d)

문제 41a

Show how you would synthesize the following:

a. 2-phenylethanol by the addition of formaldehyde to a suitable Grignard reagent

문제 41c

Show how you would synthesize the following:

c. cyclohexylmethanol from an alkyl halide using an S_N2 reaction

문제 41e

Show how you would synthesize the following:

e. cis-pent-2-en-1-thiol from a suitable alkenyl halide

문제 41f

Show how you would synthesize the following:

f. 2,5-dimethylhexane from a four-carbon alkyl halide

문제 42d

Complete the following acid–base reactions. In each case, indicate whether the equilibrium favors the reactants or the products, and explain your reasoning.

(d)

문제 42e

Complete the following acid–base reactions. In each case, indicate whether the equilibrium favors the reactants or the products, and explain your reasoning.

(e) (CH₃)₃C–O^– + CH₃CH₂OH ⇌

문제 42f

Complete the following acid–base reactions. In each case, indicate whether the equilibrium favors the reactants or the products, and explain your reasoning.

(f) (CH₃)₃C–O^– + H₂O ⇌

문제 42g

Complete the following acid–base reactions. In each case, indicate whether the equilibrium favors the reactants or the products, and explain your reasoning.

(g) KOH + CH₃CH₂OH ⇌

문제 43a

Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.

(a) octan-1-ol

문제 43b

Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.

(b) 1-cyclohexylpropan-1-ol

문제 43c,d

Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.

(d)

문제 43e,f

Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.

(e)

(f)

문제 44a

Show how you would synthesize the following compounds from any starting materials containing no more than six carbon atoms.

(a)

문제 44b

Show how you would synthesize the following compounds from any starting materials containing no more than six carbon atoms.

(b)

문제 45

Geminal diols, or 1,1-diols, are usually unstable, spontaneously losing water to give carbonyl compounds. Therefore, geminal diols are regarded as hydrated forms of ketones and aldehydes. Propose a mechanism for the acid-catalyzed loss of water from propane-2,2-diol to give acetone.

문제 46a

Vinyl alcohols are generally unstable, quickly isomerizing to carbonyl compounds. Propose mechanisms for the following isomerizations.

(a)

문제 46b

Vinyl alcohols are generally unstable, quickly isomerizing to carbonyl compounds. Propose mechanisms for the following isomerizations.

(b)

문제 46c

Vinyl alcohols are generally unstable, quickly isomerizing to carbonyl compounds. Propose mechanisms for the following isomerizations.

(c)

문제 47

Compound A (C₇H₁₁Br) is treated with magnesium in ether to give B (C₇H₁₁MgBr), which reacts violently with D₂O to give 1-methylcyclohexene with a deuterium atom on the methyl group (C). Reaction of B with acetone (CH₃COCH₃) followed by hydrolysis gives D (C₁₀H₁₈O). Heating D with concentrated H₂SO₄ gives E (C₁₀H₁₆), which decolorizes two equivalents of Br₂ to give F (C₁₀H₁₆Br₄). E undergoes hydrogenation with excess H₂ and a Pt catalyst to give isobutylcyclohexane. Determine the structures of compounds A through F, and show your reasoning throughout.

문제 48

Grignard reagents react slowly with oxetane to produce primary alcohols. Propose a mechanism for this reaction, and suggest why oxetane reacts with Grignard reagents even though most ethers do not.

문제 49

Determine the structures of compounds A through G, including stereochemistry where appropriate.

문제 50

Many hunting dogs enjoy standing nose-to-nose with a skunk while barking furiously, oblivious to the skunk spray directed toward them. One moderately effective way of lessening the amount of odor is to wash the dog in a bath containing dilute hydrogen peroxide, sodium bicarbonate, and some mild dish detergent. Use chemical reactions to describe how this mixture helps to remove the skunk spray from the dog. The two major components of skunk oil are 3-methylbutane-1-thiol and but-2-ene-1-thiol.