Textbook Question
Write structural formulas for the following compounds (includes both old- and new-style names).
(d) cyclohexylacetylene
(e) 5-methyl-3-octyne
(f) trans-3,5-dibromocyclodecyne
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Ch.9 - Alkynes
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 9, Problem 27a,b
Give common names for the following compounds.
(a) CH3–C≡C–CH2CH3
(b) Ph–C≡C–H
Verified step by step guidance1
Identify the functional groups present in each compound. Common names often depend on the functional groups and the structure of the carbon chain.
For compound (a), determine if it is an alcohol, ketone, aldehyde, carboxylic acid, or another type of compound. Look for characteristic groups like -OH, C=O, -COOH, etc.
For compound (b), similarly, identify the functional group and the structure of the carbon chain. This will help in determining the common name.
Once the functional groups are identified, consider the length of the carbon chain and any branching that may affect the common name. For example, a three-carbon alcohol is commonly known as propanol.
Combine the information about the functional group and the carbon chain to determine the common name. For example, a two-carbon alcohol is commonly known as ethanol.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
IUPAC Nomenclature
IUPAC nomenclature is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry. It provides a standardized way to name compounds based on their structure, ensuring clear communication among chemists globally.
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The different parts of an IUPAC name
Common Names in Organic Chemistry
Common names are traditional names for chemical compounds that are often derived from their source or properties. Unlike IUPAC names, common names do not follow systematic rules and can vary widely, but they are frequently used in industry and everyday language.
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02:01Introducing common solvents and other molecules in organic chemistry.
Functional Groups
Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. Identifying functional groups is crucial for naming compounds, as they often influence both the IUPAC and common names of organic compounds.
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Related Practice
Textbook Question
Write structural formulas for the following compounds (includes both old- and new-style names).
(j) vinylacetylene
(k) (S)-3-methyl-1-penten-4-yne
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Textbook Question
Give common names for the following compounds.
(c) 3-methyloct-4-yne
(d) (CH3)3C–C≡C–CH(CH3)CH2CH3
1145
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Textbook Question
Give IUPAC names for the following compounds.
(d)
(e)
(f)
2036
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Textbook Question
Write structural formulas for the following compounds (includes both old- and new-style names).
g. 5,5-dibromo-4-phenylcyclooct-1-yne
h. (E)-6-ethyloct-2-en-4-yne
i.1,4-heptadiyne
1600
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Textbook Question
Give IUPAC names for the following compounds.
(a)
(b)
(c)
1728
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