Textbook Question
Using any necessary reagents, show how you would accomplish the following syntheses.
(a)
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Ch. 19 - Amines
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 19, Problem 42d
Using any necessary reagents, show how you would accomplish the following syntheses.
(d) 
Verified step by step guidance1
Step 1: Analyze the transformation. The starting material is a cyclic ketone (cyclooctanone), and the product is a cyclic amine (cyclooctylamine). This indicates that the ketone functional group needs to be converted into an amine group.
Step 2: Use reductive amination as the key reaction. Reductive amination involves the reaction of a ketone with ammonia (NH₃) or a primary amine in the presence of a reducing agent to form an amine.
Step 3: Add ammonia (NH₃) to the ketone. This will form an imine intermediate through a condensation reaction where water is eliminated. The imine has the general structure R₂C=NH.
Step 4: Reduce the imine intermediate to the amine. Use a reducing agent such as sodium cyanoborohydride (NaBH₃CN) or hydrogen gas (H₂) with a metal catalyst (e.g., Pd/C) to selectively reduce the imine to the amine without affecting other parts of the molecule.
Step 5: Confirm the product structure. The final product should be cyclooctylamine, where the ketone group has been successfully replaced with an amine group.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Organic Synthesis
Organic synthesis is the process of constructing organic compounds through chemical reactions. It involves the strategic selection of reagents and conditions to achieve desired transformations. Understanding the principles of synthesis is crucial for designing pathways that lead to specific products, often requiring knowledge of functional groups and reaction mechanisms.
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Reagents and Reaction Conditions
Reagents are substances used to bring about a chemical reaction, while reaction conditions refer to the specific environment in which the reaction occurs, including temperature, pressure, and solvent. Selecting appropriate reagents and optimizing conditions is essential for successful synthesis, as they can significantly influence the yield and purity of the desired product.
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Mechanisms of Organic Reactions
The mechanism of an organic reaction describes the step-by-step sequence of events that occur during the transformation of reactants into products. Understanding mechanisms helps predict the outcomes of reactions, including the formation of intermediates and the stereochemistry of products. This knowledge is vital for planning synthetic routes and troubleshooting unexpected results.
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Related Practice
Textbook Question
Using any necessary reagents, show how you would accomplish the following syntheses.
(b)
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Textbook Question
The following drugs are synthesized using the methods in this chapter and in previous chapters. Devise a synthesis for each, starting with any compounds containing no more than six carbon atoms.
(a) Phenacetin, used with aspirin and caffeine in pain-relief medications.
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Textbook Question
Using any necessary reagents, show how you would accomplish the following syntheses.
(g)
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Textbook Question
Using any necessary reagents, show how you would accomplish the following syntheses.
(e)
(f)
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Textbook Question
Using any necessary reagents, show how you would accomplish the following syntheses.
(c)
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