Textbook Question
Draw a mechanism for the following oxidation reactions.
(b)
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Ch. 13 - Alcohols, Ethers and Related Compounds: Substitution and Elimination
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471
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Table of contents
- Ch. 2 - General Chemistry Translated: Finding the Electrons114
- Ch. 3 - Alkanes and Cycloalkanes: Properties and Conformational Analysis109
- Ch. 4 - Acids and Bases: Electron Flow144
- Ch. 5 - Chemical Reaction Analysis: Thermodynamics and Kinetics118
- Ch. 6 - Stereoisomerism: Arrangement of Atoms in Space112
- Ch. 7 - Principles of Green (Organic) Chemistry3
- Ch. 8 - Alkenes I: Properties and Electrophilic Additions158
- Ch. 9 - Alkenes II: Oxidation and Reduction150
- Ch. 10 - Alkynes: Electrophilic Addition and Redox Reactions101
- Ch. 11 - Properties and Synthesis of Alkyl Halides: Radical Reactions108
- Ch. 12 - Substitution and Elimination: Reactions of Haloalkanes172
- Ch. 13 - Alcohols, Ethers and Related Compounds: Substitution and Elimination239
- Ch. 14 - Structural Identification I: Infrared Spectroscopy and Mass Spectrometry54
- Ch. 15 - Structural Identification II: Nuclear Magnetic Resonance Spectroscopy93
- Ch. 16 - Metals in Organic Chemistry48
- Ch. 17 - Carbonyl Addition Reactions: Aldehydes and Ketones45
- Ch. 18 - Nucleophilic Acyl Substitution I: Carboxylic Acids18
- Ch. 19 - Nucleophilic Acyl Substitution II: Carboxylic Acid Derivatives39
- Ch. 20 - Enolates: Carbonyl Addition and Substitution13
- Ch. 21 - Conjugated Systems I: Stability and Addition Reactions56
- Ch. 22 - Conjugated Systems II: Pericyclic Reactions54
- Ch. 23 - Benzene I: Aromatic Stability and Substitution Reactions64
- Ch. 24 - Benzene II: Reactions Influenced by the Aromatic Ring62
- Ch. 25 - Amines: Structure, Reactions, and Synthesis27
- Ch. 26 - Amino Acids, Proteins, and Peptide Synthesis9
- Ch. 27 - Carbohydrates, Nucleic Acids, and Lipids54
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471Not the one you use?Change textbook
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Mullins 1st EditionCh. 13 - Alcohols, Ethers and Related Compounds: Substitution and EliminationProblem 102
Mullins 1st EditionCh. 13 - Alcohols, Ethers and Related Compounds: Substitution and EliminationProblem 102Chapter 12, Problem 102
Identify the two possible combinations of haloalkane and alkoxide that can be used to make the following ether.
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Identify the ether functional group in the given structure, which is characterized by an oxygen atom connected to two alkyl or aryl groups.
Break the ether into two parts at the oxygen atom to determine the two possible alkyl groups that can be used to form the ether.
Consider the first possible combination: One part of the ether can be derived from a haloalkane, and the other part from an alkoxide. For example, the left side of the ether (cyclopentylmethyl group) can be derived from a haloalkane, and the right side (allyl group) can be derived from an alkoxide.
Consider the second possible combination: Reverse the roles of the haloalkane and alkoxide. The right side of the ether (allyl group) can be derived from a haloalkane, and the left side (cyclopentylmethyl group) can be derived from an alkoxide.
For each combination, ensure that the haloalkane is a good leaving group and the alkoxide is a strong nucleophile to facilitate the Williamson ether synthesis, which involves the nucleophilic substitution reaction.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Haloalkanes
Haloalkanes, or alkyl halides, are organic compounds containing a carbon atom bonded to one or more halogen atoms (such as fluorine, chlorine, bromine, or iodine). They are important in organic synthesis and can undergo nucleophilic substitution reactions, where the halogen is replaced by a nucleophile, such as an alkoxide, to form new compounds like ethers.
Alkoxides
Alkoxides are the conjugate bases of alcohols, formed by deprotonating an alcohol with a strong base, typically an alkali metal. They are strong nucleophiles and are commonly used in the synthesis of ethers through the Williamson ether synthesis, where an alkoxide reacts with a haloalkane to form an ether.
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General Reaction
Williamson Ether Synthesis
The Williamson ether synthesis is a method for producing ethers by reacting an alkoxide ion with a primary haloalkane. This reaction proceeds via an SN2 mechanism, where the nucleophile attacks the electrophilic carbon of the haloalkane, leading to the formation of an ether. The choice of haloalkane is crucial, as steric hindrance can affect the reaction's efficiency.
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03:50The Mechanism of Williamson Ether Synthesis.
Related Practice
Textbook Question
Draw a mechanism for the following oxidation reactions.
(c)
901
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Textbook Question
Suggest a synthesis for the following molecules beginning with organic molecules containing three or fewer carbons. [You will need to use a protecting group in these syntheses.]
(a)
991
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Textbook Question
In contrast to Assessment 13.102, only one combination of haloalkane and alkoxide can be used in the Williamson ether synthesis to make the ether shown. Identify the combination and explain why it is the only combination that works.
838
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Textbook Question
Suggest a synthesis for the following molecules beginning with organic molecules containing three or fewer carbons. [You will need to use a protecting group in these syntheses.]
(b)
907
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Textbook Question
Draw a mechanism for the following oxidation reactions.
(d)
1117
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