Textbook Question
Provide the alcohol that would be used to make the bromoalkanes shown using PBr₃.
(c)
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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 35a
Mullins 1st EditionCh. 13 - Alcohols, Ethers and Related Compounds: Substitution and EliminationProblem 35aChapter 12, Problem 35a
Provide the alcohol that would be used to make the bromoalkanes shown using PBr₃.
(a) 
Verified step by step guidance1
Identify the bromoalkane structure given in the problem. This will help determine the corresponding alcohol needed for the reaction.
Understand that PBr₃ (phosphorus tribromide) is used to convert alcohols into bromoalkanes by substituting the hydroxyl group (-OH) with a bromine atom (Br).
Determine the position of the bromine atom in the bromoalkane. This position corresponds to where the hydroxyl group was in the original alcohol.
Draw the structure of the alcohol by replacing the bromine atom in the bromoalkane with a hydroxyl group (-OH). Ensure that the carbon skeleton remains unchanged.
Verify the structure of the alcohol by considering the reaction mechanism of PBr₃, which involves the formation of a phosphite ester intermediate and subsequent substitution to form the bromoalkane.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Alcohols
Alcohols are organic compounds characterized by the presence of a hydroxyl group (-OH) attached to a carbon atom. They serve as key starting materials in various chemical reactions, including the formation of bromoalkanes. Understanding the structure and reactivity of alcohols is essential for predicting the outcome of reactions involving PBr₃.
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Bromoalkanes
Bromoalkanes, also known as alkyl bromides, are organic compounds where a bromine atom is bonded to an alkyl group. They are typically synthesized from alcohols through substitution reactions using reagents like PBr₃. Recognizing the structure of bromoalkanes helps in identifying the corresponding alcohol precursor needed for their synthesis.
PBr₃ Reaction Mechanism
Phosphorus tribromide (PBr₃) is a reagent used to convert alcohols into bromoalkanes via a substitution reaction. The mechanism involves the formation of an intermediate where the hydroxyl group is replaced by a bromine atom. Understanding this mechanism is crucial for determining which alcohol can be transformed into a specific bromoalkane using PBr₃.
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Related Practice
Textbook Question
Provide the alcohol that would be used to make the bromoalkanes shown using PBr₃.
(b)
894
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Textbook Question
When SOCl2 is used in place of HCl, only one product results. Why are these conditions better?
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Textbook Question
Besides PBr3. and SOCl2 , there are other ways of synthesizing haloalkanes. One such way is shown. Provide an arrow-pushing mechanism that rationalizes formation of the chloroalkane. [Hint: Dimethyl sulfide is a good nucleophile and Cl₂ is an electrophile. Start by reacting those two together.]
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Textbook Question
Identify the reagent that should be used to obtain each stereochemical outcome shown.
(b)
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Textbook Question
Identify the reagent that should be used to obtain each stereochemical outcome shown.
(a)
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