Textbook Question
Draw the structure that corresponds to the compound names shown.
(b) (5R,6E)-5-bromooct-6-en-1-yne
Ch. 11 - Properties and Synthesis of Alkyl Halides: Radical Reactions
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. 11 - Properties and Synthesis of Alkyl Halides: Radical ReactionsProblem 36
Mullins 1st EditionCh. 11 - Properties and Synthesis of Alkyl Halides: Radical ReactionsProblem 36Chapter 10, Problem 36
Vitamin E, especially the B ring and the side chain, is a terpenoid derivative. Identify the isoprene units nature used to make it.
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Examine the structure of Vitamin E provided in the image. Notice the B ring and the long side chain attached to it. The molecule is a terpenoid derivative, which means it is constructed from isoprene units.
Recall that isoprene units have the structure CH₂=C(CH₃)-CH=CH₂. These units are the building blocks of terpenoids and are often joined in a head-to-tail fashion.
Identify the isoprene units in the structure. Look for repeating patterns of five-carbon units (C₅) in the side chain and the B ring. These units may be modified but retain the basic isoprene skeleton.
Count the number of isoprene units in the side chain. The side chain appears to be composed of multiple isoprene units linked together, forming a long hydrocarbon chain.
Analyze the B ring. The B ring is derived from isoprene units as well, but it has undergone cyclization and functionalization to form the aromatic structure seen in the image.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Isoprene Units
Isoprene units are the fundamental building blocks of terpenoids and terpenes, consisting of a five-carbon structure (C5H8). These units can be linked together in various ways to form larger molecules. In the case of Vitamin E, the arrangement and combination of isoprene units contribute to its unique structure and properties.
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Introduction to Polymers Example 1
Terpenoids
Terpenoids, also known as isoprenoids, are a large class of organic compounds derived from isoprene units. They are characterized by their diverse structures and biological activities, often found in essential oils and natural resins. Vitamin E is classified as a terpenoid due to its derivation from isoprene, specifically through the modification of its structure to include rings and side chains.
Vitamin E Structure
Vitamin E refers to a group of fat-soluble compounds, primarily tocopherols and tocotrienols, that possess antioxidant properties. The structure of Vitamin E includes a chromanol ring and a long hydrophobic tail, which are crucial for its biological function. Understanding the specific arrangement of isoprene units in Vitamin E helps in recognizing how its structure relates to its role in protecting cell membranes from oxidative damage.
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Guided course
01:56Assigning E/Z
Related Practice
Textbook Question
Draw the structure that corresponds to the compound names shown.
(a) (S)-3-bromo-3-ethylcyclohex-1-ene
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Textbook Question
The fact that allylic halogenation results in formation of the most stable alkene suggests that it is under thermodynamic control. Thus, the second propagation step must be reversible. Suggest an arrow-pushing mechanism by which the less stable allylic halide might equilibrate to the more stable allylic halide.
Textbook Question
(a) Using bond-dissociation energies (Table 5.6), which of the indicated bonds should break most easily?
(b) How does that help you explain the results shown in Figure 11.40?
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Textbook Question
The following polyunsaturated fat, which does not exist in nature, is oxidized at a rate similar to oleic acid (Table 11.14), despite having two cis-alkenes. Why?
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Textbook Question
Name the following halogenated compounds according to the IUPAC rules of nomenclature.
(c)
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