Textbook Question
Draw the structures and provide systematic names for parts a, b, and c by substituting a chlorine for a hydrogen of methylcyclohexane:
(b) a tertiary alkyl halide
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4. Alkanes and Cycloalkanes
Naming Alkyl Halides
2:33 minutesProblem 8e,f
Textbook Question
Name the following compounds:
e. 
f. 
Verified step by step guidance1
Step 1: Identify the longest continuous carbon chain in the structure. For both compounds, the longest chain contains four carbon atoms, making the parent name 'butane'.
Step 2: Determine the substituents attached to the main chain. In the first compound, there is a bromine atom (Br) and a methyl group (CH3). In the second compound, there is a chlorine atom (Cl) and a methyl group (CH3).
Step 3: Number the carbon chain to give the substituents the lowest possible numbers. For the first compound, numbering starts from the end closest to the bromine atom, resulting in bromine on carbon 2 and the methyl group on carbon 3. For the second compound, numbering starts from the end closest to the chlorine atom, resulting in chlorine on carbon 3 and the methyl group on carbon 2.
Step 4: Combine the substituents with the parent name, listing them alphabetically and including their position numbers. For the first compound, 'bromo' comes before 'methyl', and for the second compound, 'chloro' comes before 'methyl'.
Step 5: Write the full name of the compound. For the first compound, the name is '2-bromo-3-methylbutane'. For the second compound, the name is '3-chloro-2-methylbutane'.
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2mKey Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Nomenclature in Organic Chemistry
Nomenclature refers to the systematic naming of chemical compounds based on established rules. The International Union of Pure and Applied Chemistry (IUPAC) provides guidelines for naming organic compounds, which include identifying the longest carbon chain, determining functional groups, and assigning locants to indicate the position of substituents.
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Functional Groups
Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. Common functional groups include hydroxyl (-OH), carboxyl (-COOH), and amino (-NH2) groups. Recognizing these groups is essential for naming compounds and predicting their reactivity.
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Structural Isomers
Structural isomers are compounds that have the same molecular formula but different structural arrangements of atoms. This can lead to variations in physical and chemical properties. Understanding structural isomerism is crucial for accurately naming compounds, as different structures can have distinct names despite having the same composition.
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