Textbook Question
Show how you would accomplish the following synthetic conversions efficiently and in good yield. You may use any necessary additional reagents and solvents.
(f)
2
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Ch. 18 - Ketones and Aldehydes
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 18, Problem 47g
Show how you would accomplish the following synthetic conversions efficiently and in good yield. You may use any necessary additional reagents and solvents.
(g) 
Verified step by step guidance1
Step 1: Begin by converting the carboxylic acid group (-COOH) into an acyl chloride (-COCl). This can be achieved using reagents such as thionyl chloride (SOCl₂) or oxalyl chloride in the presence of a base like pyridine. This step activates the carboxylic acid for further reaction.
Step 2: Once the acyl chloride is formed, perform a Friedel-Crafts acylation reaction. Use benzene (Ph-H) as the aromatic substrate and a Lewis acid catalyst such as aluminum chloride (AlCl₃) to facilitate the electrophilic aromatic substitution. This will introduce the phenyl group (Ph) onto the carbonyl carbon.
Step 3: After the Friedel-Crafts acylation, isolate and purify the product using standard organic workup techniques, such as washing with water, drying over anhydrous magnesium sulfate, and evaporating the solvent.
Step 4: Confirm the structure of the product using spectroscopic methods such as IR spectroscopy (to verify the presence of the carbonyl group) and NMR spectroscopy (to confirm the phenyl group and cyclopentyl structure).
Step 5: Optimize the reaction conditions (e.g., temperature, solvent choice) to ensure high yield and efficiency. For example, using a non-polar solvent like dichloromethane (CH₂Cl₂) can improve the reaction rate and yield in the Friedel-Crafts acylation step.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Synthetic Pathways
Synthetic pathways refer to the series of chemical reactions that transform starting materials into desired products. Understanding these pathways is crucial for planning efficient syntheses, as it involves selecting appropriate reagents, conditions, and reaction mechanisms to achieve high yields and minimize by-products.
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Reagents and Solvents
Reagents are substances used to bring about a chemical reaction, while solvents are the mediums in which reactions occur. Choosing the right reagents and solvents is essential for optimizing reaction conditions, influencing factors such as solubility, reactivity, and selectivity, which ultimately affect the yield of the desired product.
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Reaction Mechanisms
Reaction mechanisms describe the step-by-step process by which reactants are converted into products. A thorough understanding of mechanisms helps predict the outcomes of reactions, identify potential side reactions, and guide the selection of conditions that favor the desired transformation, thereby improving overall efficiency and yield.
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Related Practice
Textbook Question
Show how you would accomplish the following synthetic conversions efficiently and in good yield. You may use any necessary additional reagents and solvents.
(e)
1
views
Textbook Question
For each compound,
1. name the functional group.
2. show what compound(s) result from complete hydrolysis.
(a)
1
views
Textbook Question
For each compound,
1. name the functional group.
2. show what compound(s) result from complete hydrolysis.
(b)
1
views
Textbook Question
Show how you would accomplish the following synthetic conversions efficiently and in good yield. You may use any necessary additional reagents and solvents.
(h)
1
views
Textbook Question
Show how you would accomplish the following synthetic conversions efficiently and in good yield. You may use any necessary additional reagents and solvents.
(d)
2
views