Textbook Question
Give the products expected when the following compounds are ozonized and reduced.
(a)
(b)
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Ch.8 - Reactions of Alkenes
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 8, Problem 47m
Limonene is one of the compounds that give lemons their tangy odor. Show the structures of the products expected when limonene reacts with an excess of each of these reagents.
m. CHBr3 and 50% aq. NaOH
Verified step by step guidance1
Step 1: Analyze the structure of limonene. Limonene is a cyclic terpene with a six-membered ring containing a double bond and an isopropenyl group attached to the ring. The molecule has two reactive double bonds that can undergo chemical reactions.
Step 2: Understand the reaction conditions. The reagents CHBr3 (bromoform) and 50% aqueous NaOH are used in the haloform reaction. This reaction typically targets methyl ketones, but in this case, it can also react with the double bonds in limonene under basic conditions.
Step 3: Predict the interaction of CHBr3 and NaOH with limonene. The double bonds in limonene can undergo electrophilic addition reactions. The basic conditions provided by NaOH can deprotonate CHBr3, generating a reactive intermediate (tribromomethide ion) that can attack the double bonds.
Step 4: Consider the excess reagent. Since the reaction involves an excess of CHBr3 and NaOH, both double bonds in limonene are likely to react. The products will include brominated derivatives where bromine atoms are added across the double bonds.
Step 5: Draw the expected products. The first double bond in the ring will react to form a dibrominated cyclohexane derivative, while the isopropenyl group will react to form a brominated side chain. Ensure to account for stereochemistry if applicable.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Limonene Structure and Properties
Limonene is a cyclic monoterpene with a distinctive structure characterized by a six-membered ring and a double bond. It is known for its citrus aroma and is commonly found in the peels of citrus fruits. Understanding its structure is crucial for predicting its reactivity with various reagents, as the presence of double bonds makes it susceptible to electrophilic addition reactions.
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Electrophilic Addition Reactions
Electrophilic addition reactions involve the addition of an electrophile to a nucleophilic site, typically a double bond in alkenes. In the case of limonene, reagents like CHBr3 can act as electrophiles, leading to the formation of brominated products. Recognizing the mechanism of these reactions helps in predicting the products formed when limonene reacts with specific reagents.
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Reagents and Reaction Conditions
The choice of reagents and reaction conditions significantly influences the outcome of organic reactions. In this case, CHBr3 and 50% aqueous NaOH are used, where CHBr3 serves as a brominating agent, and NaOH can facilitate the reaction by providing a basic environment. Understanding how these reagents interact with limonene is essential for determining the expected products of the reaction.
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Related Practice
Textbook Question
Limonene is one of the compounds that give lemons their tangy odor. Show the structures of the products expected when limonene reacts with an excess of each of these reagents.
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Textbook Question
Give the products expected when the following compounds are ozonized and reduced.
(c)
(d)
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Limonene is one of the compounds that give lemons their tangy odor. Show the structures of the products expected when limonene reacts with an excess of each of these reagents.
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Textbook Question
Limonene is one of the compounds that give lemons their tangy odor. Show the structures of the products expected when limonene reacts with an excess of each of these reagents.
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Textbook Question
Show how you would make the following compounds from a suitable cyclic alkene.
(a)
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