Textbook Question
Show how each of the following compounds can be synthesized from the given starting materials:
b.
Ch. 9 - Substitution and Elimination Reactions of Alkyl Halides
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
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Table of contents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 1)31
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 2)65
- Ch. 2 - Acids and Bases: Central to Understanding Organic Chemistry84
- Ch. 3 - An Introduction to Organic Compounds:Nomenclature, Physical Properties, and Structure183
- Ch. 4 - Isomers: The Arrangement of Atoms in Space121
- Ch. 5 - Alkenes: Structure, Nomenclature, and an Introduction to Reactivity • Thermodynamics and Kinetics83
- Ch. 6 - The Reactions of Alkenes • The Stereochemistry of Addition Reactions175
- Ch. 7 - The Reactions of Alkynes • An Introduction to Multistep Synthesis119
- Ch. 8 - Delocalized Electrons: Their Effect on Stability, pKa, and the Products of a Reaction • Aromaticity and Electronic Effects: An Introduction to the Reactions of Benzene148
- Ch. 9 - Substitution and Elimination Reactions of Alkyl Halides212
- Ch. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing Compounds131
- Ch. 11 - Organometallic Compounds60
- Ch. 12 - Radicals90
- Ch. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy62
- Ch. 14 - NMR Spectroscopy95
- Ch. 15 - Reactions of Carboxylic Acids and Carboxylic Acid Derivatives123
- Ch. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid Derivatives141
- Ch. 17 - Reactions at the Alpha-Carbon101
- Ch. 18 - Reactions of Benzene and Substituted Benzenes144
- Ch. 19 - More About Amines • Reactions of Heterocyclic Compounds49
- Ch. 20 - The Organic Chemistry of Carbohydrates80
- Ch. 21 - Amino Acids, Peptides, and Proteins57
- Ch. 22 - Catalysis in Organic Reactions and in Enzymatic Reactions35
- Ch. 23 - The Organic Chemistry of the Coenzymes—Compounds Derived from Vitamins1
- Ch. 28 - Pericyclic Reactions58
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Bruice 8th EditionCh. 9 - Substitution and Elimination Reactions of Alkyl HalidesProblem 106c
Bruice 8th EditionCh. 9 - Substitution and Elimination Reactions of Alkyl HalidesProblem 106cChapter 10, Problem 106c
Show how each of the following compounds can be synthesized from the given starting materials:
c. 
Verified step by step guidance1
Step 1: Identify the starting material and the target compound. The starting material is 2-chloropropane, and the target compound is 2-methylbutanal. The transformation involves extending the carbon chain and introducing an aldehyde functional group.
Step 2: Perform a nucleophilic substitution reaction to replace the chlorine atom in 2-chloropropane with a cyanide group (-CN). This can be achieved using sodium cyanide (NaCN) in an aprotic solvent like DMSO. The product will be 2-methylpropanenitrile.
Step 3: Hydrolyze the nitrile group (-CN) in 2-methylpropanenitrile to form a carboxylic acid. This can be done using acidic or basic hydrolysis. For example, refluxing with aqueous HCl or NaOH will yield 2-methylpropanoic acid.
Step 4: Convert the carboxylic acid group in 2-methylpropanoic acid to an aldehyde group. This can be achieved using a reduction reaction, such as the Rosenmund reduction, which involves hydrogenation of the acid chloride (prepared from the carboxylic acid) using Pd/BaSO4 catalyst.
Step 5: Verify the structure of the final product, 2-methylbutanal, ensuring that the carbon chain has been extended and the aldehyde functional group is correctly positioned.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Alkynes and Alkynide Ions
Alkynes are hydrocarbons containing at least one carbon-carbon triple bond. Alkynide ions are the conjugate bases of terminal alkynes, formed by deprotonation of the terminal hydrogen. These ions are strong nucleophiles and can participate in nucleophilic substitution reactions, allowing for the formation of new carbon-carbon bonds.
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Sodium Alkynide Alkylation
Nucleophilic Substitution Reactions
Nucleophilic substitution reactions involve the replacement of a leaving group in a molecule with a nucleophile. In the context of alkynide alkylation, the alkynide ion acts as the nucleophile, attacking an alkyl halide to form a new carbon-carbon bond. This reaction is fundamental in organic synthesis for building complex molecules.
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Synthesis of Aldehydes
Aldehydes are organic compounds characterized by the presence of a carbonyl group (C=O) at the end of a carbon chain. They can be synthesized from alkynes through various methods, including hydroboration-oxidation or ozonolysis. Understanding the reactivity of alkynes and the conditions required for these transformations is crucial for effective synthesis.
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Related Practice
Textbook Question
What substitution products are obtained when each of the following compounds is added to a solution of sodium acetate in acetic acid?
a. 2-chloro-2-methyl-3-hexene
b. 3-bromo-1-methylcyclohexene
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Textbook Question
In which solvent—ethanol or diethyl ether—would the equilibrium for the following SN2 reaction lie farther to the right?
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Textbook Question
Show how each of the following compounds can be synthesized from the given starting materials:
d.
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Textbook Question
Show how each of the following compounds can be synthesized from the given starting materials:
a. CH3CH2CH2Br→CH3CH2CH2CH2CH3
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Textbook Question
The rate of the reaction of methyl iodide with quinuclidine was measured in nitrobenzene, and then the rate of the reaction of methyl iodide with triethylamine was measured in the same solvent. The concentration of the reagents was the same in both experiments.
a.Which reaction had the larger rate constant?
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