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 106a
Bruice 8th EditionCh. 9 - Substitution and Elimination Reactions of Alkyl HalidesProblem 106aChapter 10, Problem 106a
Show how each of the following compounds can be synthesized from the given starting materials:
a. CH3CH2CH2Br→CH3CH2CH2CH2CH3
Verified step by step guidance1
Step 1: Recognize the transformation required. The starting material is CH3CH2CH2Br (1-bromopropane), and the target compound is CH3CH2CH2CH2CH3 (pentane). This involves extending the carbon chain by one carbon atom.
Step 2: Identify the appropriate reaction type. To extend the carbon chain, a coupling reaction such as the Wurtz reaction can be used. The Wurtz reaction involves the reaction of alkyl halides with sodium metal in dry ether to form higher alkanes.
Step 3: Write the reaction mechanism. In the Wurtz reaction, two molecules of the alkyl halide react with sodium metal to form a new carbon-carbon bond. The general reaction is: , where R is the alkyl group and X is the halogen.
Step 4: Apply the reaction to the given compound. React two molecules of CH3CH2CH2Br with sodium metal in dry ether. The sodium atoms will remove the bromine atoms, allowing the two propyl groups (CH3CH2CH2-) to couple and form pentane (CH3CH2CH2CH2CH3).
Step 5: Verify the product. The reaction yields pentane, which matches the target compound. Ensure that the reaction conditions (dry ether and sodium metal) are suitable for the Wurtz reaction to proceed efficiently.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Nucleophilic Substitution
Nucleophilic substitution is a fundamental reaction in organic chemistry where a nucleophile replaces a leaving group in a molecule. In the context of synthesizing alkanes, this process can involve the substitution of a halogen (like Br) with a nucleophile, often leading to the formation of a new carbon-carbon bond.
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Nucleophiles and Electrophiles can react in Substitution Reactions.
Alkyl Halides
Alkyl halides are organic compounds containing a carbon atom bonded to a halogen atom (such as bromine). They serve as important intermediates in organic synthesis, as they can undergo various reactions, including nucleophilic substitutions and eliminations, to form more complex molecules or to extend carbon chains.
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Carbon Chain Elongation
Carbon chain elongation refers to the process of increasing the length of a carbon chain in organic compounds. This can be achieved through reactions such as the Wurtz reaction, where two alkyl halides react in the presence of sodium metal to form a longer alkane, effectively allowing the synthesis of larger hydrocarbons from smaller precursors.
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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
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:
c.
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Textbook Question
Draw the substitution and elimination products.
a.
b.
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Textbook Question
tert-Butyl chloride undergoes solvolysis in both acetic acid and formic acid. Solvolysis occurs 5000 times faster in one of these two solvents than in the other. In which solvent is solvolysis faster? Explain your answer. (Hint: Formic acid is more polar than acetic acid.)
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