Textbook Question
Indicate which compounds contain aldehyde or ketone carbonyl groups.
c. CH3CH2–O–CH2–CHO
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15. Aldehydes and Ketones
Naming Aldehydes
Multiple Choice
Provide the systematic name for the following aldehyde.
A
4-fluoro-5-methylheptanal
B
4-fluoro-5-ethylhexanal
C
4-fluoro-5-methylheptanone
D
4-fluoro-5-ethylhexanone
Verified step by step guidance1
Identify the longest carbon chain that contains the aldehyde group. In this structure, the longest chain has 7 carbon atoms, making it a heptanal.
Number the carbon chain starting from the end nearest to the aldehyde group, which is the carbonyl carbon (C=O) in the aldehyde group.
Identify and name the substituents attached to the main carbon chain. In this structure, there is a fluorine atom on the fourth carbon and a methyl group on the fifth carbon.
Combine the substituents with the main chain name, placing the substituents in alphabetical order. The fluorine substituent is named first, followed by the methyl group.
Construct the systematic name by combining the substituents and the main chain name: 4-fluoro-5-methylheptanal.
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