Textbook Question
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 ⇌
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Ch.10 - Structure and Synthesis of Alcohols
Wade9th EditionOrganic ChemistryISBN: 9780135213728
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Table of contents
- Ch.1 - Structure and Bonding107
- Ch. 2 - Acids and Bases; Functional Groups115
- Ch.3 - Structure and Stereochemistry of Alkanes100
- Ch.4 - The Study of Chemical Reactions99
- Ch.5 - Stereochemistry93
- Ch.6 - Alkyl Halides; Nucleophilic Substitution118
- Ch. 7 - Structure and Synthesis of Alkenes; Elimination158
- Ch.8 - Reactions of Alkenes171
- Ch.9 - Alkynes91
- Ch.10 - Structure and Synthesis of Alcohols143
- Ch.11 - Reactions of Alcohols104
- Ch. 12 - Infrared Spectroscopy and Mass Spectrometry22
- Ch. 13 - Nuclear Magnetic Resonance Spectroscopy45
- Ch. 14 - Ethers, Epoxides, and Thioethers72
- Ch. 15 - Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy89
- Ch. 16 - Aromatic Compounds74
- Ch. 17 - Reactions of Aromatic Compounds126
- Ch. 18 - Ketones and Aldehydes193
- Ch. 19 - Amines129
- Ch. 20 - Carboxylic Acids77
- Ch. 21 - Carboxylic Acid Derivatives141
- Ch. 22 - Condensations and Alpha Substitutions of Carbonyl Compounds175
- Ch. 23 - Carbohydrates and Nucleic Acids93
- Ch. 24 - Amino Acids, Peptides, and Proteins54
Chapter 10, Problem 43c,d
Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.
(c) 1-phenylbutan-1-ol
(d) 
Verified step by step guidance1
Step 1: Identify the alcohols provided in the problem. For part (c), the alcohol is 1-phenylbutan-1-ol, which contains a phenyl group attached to a butanol chain. For part (d), the alcohol is cyclohexylmethanol, which has a hydroxyl group (-OH) attached to a cyclohexane ring.
Step 2: Determine the carbonyl compound that could be reduced to form each alcohol. For 1-phenylbutan-1-ol, the precursor carbonyl compound would be 1-phenylbutan-1-one, a ketone. For cyclohexylmethanol, the precursor carbonyl compound would be cyclohexanecarboxaldehyde, an aldehyde.
Step 3: Select appropriate reducing agents for the reduction of the carbonyl compounds to alcohols. Common reducing agents include sodium borohydride (NaBH₄) for mild reductions and lithium aluminum hydride (LiAlH₄) for stronger reductions.
Step 4: Explain the reduction process. The reducing agent donates hydride ions (H⁻) to the carbonyl carbon, converting the C=O bond into a C-OH bond. This process is selective depending on the reducing agent used.
Step 5: Note any stereochemical considerations. If the reduction creates a chiral center, the product may exist as a racemic mixture unless a stereoselective reducing agent or catalyst is used.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Carbonyl Compounds
Carbonyl compounds are organic molecules that contain a carbon atom double-bonded to an oxygen atom (C=O). They include aldehydes, ketones, and carboxylic acids, which can be reduced to alcohols. Understanding the structure and reactivity of these compounds is essential for identifying suitable carbonyls that can be transformed into the desired alcohols through reduction.
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Reducing Agents
Reducing agents are substances that donate electrons to another compound, thereby reducing its oxidation state. Common reducing agents for carbonyl compounds include lithium aluminum hydride (LiAlH4) and sodium borohydride (NaBH4). Knowing the appropriate reducing agent is crucial for effectively converting carbonyl compounds into alcohols, as different agents have varying reactivity and selectivity.
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Stereochemistry of Alcohols
Stereochemistry refers to the spatial arrangement of atoms in molecules and is particularly important in organic chemistry when discussing alcohols. The formation of alcohols from carbonyl compounds can lead to chiral centers, resulting in enantiomers. Understanding stereochemistry is vital for predicting the properties and reactivity of the resulting alcohols, especially when specific stereoisomers are required.
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Related Practice
Textbook Question
Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.
(b) 1-cyclohexylpropan-1-ol
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Textbook Question
Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.
(a) octan-1-ol
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Textbook Question
Show how you would synthesize the following compounds from any starting materials containing no more than six carbon atoms.
(a)
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Textbook Question
Show how you would synthesize the following compounds from any starting materials containing no more than six carbon atoms.
(b)
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Textbook Question
Suggest carbonyl compounds and reducing agents that might be used to form the following alcohols.
(e)
(f)
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