Textbook Question
Draw the structures of the following compounds.
c. 3,3-diethyl-4-(2,2-dimethylpropyl)octane
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4. Alkanes and Cycloalkanes
IUPAC Naming
9:32 minutesProblem 67g
Textbook Question
A student was given the structural formulas of several compounds and was asked to give them systematic names. How many did the student name correctly? Correct those that are misnamed.
g. 3,3-dichlorooctane
Verified step by step guidance1
Step 1: Identify the parent chain. The parent chain is the longest continuous chain of carbon atoms. In this case, the parent chain is 'octane,' which consists of 8 carbon atoms.
Step 2: Number the carbon atoms in the parent chain. Start numbering from the end of the chain that gives the substituents the lowest possible numbers. For this compound, the substituents are two chlorine atoms.
Step 3: Locate the positions of the substituents. The two chlorine atoms are attached to the third carbon atom in the chain. This is correctly indicated in the name '3,3-dichlorooctane.'
Step 4: Verify the substituent prefixes and their positions. The prefix 'di-' is used to indicate two chlorine atoms, and their positions (3,3) are correctly specified. The name also includes the parent chain 'octane,' which is correct.
Step 5: Conclude that the name '3,3-dichlorooctane' is correct. No corrections are needed for this compound.
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9mKey Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
IUPAC Nomenclature
IUPAC nomenclature is a systematic method for naming organic chemical compounds. It provides rules for naming based on the structure of the molecule, including the longest carbon chain, functional groups, and substituents. Understanding these rules is essential for accurately naming compounds and identifying their structures.
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The different parts of an IUPAC name
Substituents and Their Position
In organic chemistry, substituents are atoms or groups of atoms that replace hydrogen atoms in a hydrocarbon chain. The position of these substituents is indicated by numbers in the compound's name, which correspond to the carbon atoms in the chain. Correctly identifying and numbering the substituents is crucial for accurate nomenclature.
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Alkane Structure and Isomerism
Alkanes are saturated hydrocarbons with single bonds between carbon atoms, following the general formula CnH2n+2. Understanding the structure of alkanes, including branching and isomerism, is important for naming compounds correctly. Isomers can have different physical and chemical properties, making accurate naming vital for clear communication in chemistry.
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