Textbook Question
Name the following alkanes and haloalkanes. When two or more substituents are present, list them in alphabetical order.
(c)
(d)
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4. Alkanes and Cycloalkanes
IUPAC Naming
1:48 minutesProblem 8c
Textbook Question
Draw the structures of the following compounds.
c. 3,3-diethyl-4-(2,2-dimethylpropyl)octane
Verified step by step guidance1
Identify the parent chain: The parent chain is 'octane', which means it has 8 carbon atoms in a continuous chain.
Number the carbon atoms in the parent chain: Start numbering from the end closest to the first substituent to ensure the lowest possible numbers for the substituents.
Locate and attach the substituents: At carbon 3, attach two ethyl groups (3,3-diethyl). At carbon 4, attach a 2,2-dimethylpropyl group.
Draw the substituents: An ethyl group is -CH2CH3, and a 2,2-dimethylpropyl group is a three-carbon chain with two methyl groups attached to the second carbon.
Combine the structure: Ensure all substituents are correctly attached to the main chain, and verify that the total number of carbon atoms matches the name of the compound.
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Video duration:
1mKey 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 that each name is unique and descriptive. Understanding IUPAC rules is essential for interpreting and drawing chemical structures from names.
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The different parts of an IUPAC name
Alkane Structure
Alkanes are hydrocarbons with only single bonds between carbon atoms, forming a saturated chain. The general formula for alkanes is CnH2n+2. Understanding the structure of alkanes, including straight chains and branched chains, is crucial for drawing and identifying compounds like octane, which is a straight-chain alkane with eight carbon atoms.
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Substituents in Organic Chemistry
Substituents are atoms or groups of atoms that replace hydrogen atoms in a hydrocarbon chain. They are named and positioned according to their location on the main carbon chain. In the given compound, '3,3-diethyl' and '4-(2,2-dimethylpropyl)' are substituents that modify the octane chain, and understanding their placement is key to drawing the correct structure.
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