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How are carboxylic acids with carbon-carbon double bonds named?
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carboxylic acid
Alcohols may be oxidized to give aldehydes, ketones, and carboxylic acids. The oxidation of organic compounds generally increases the number of bonds from carbon to oxygen, and it may decrease the number of bonds to hydrogen.
To name carboxylic acids that contain a carbon-carbon double bond using IUPAC nomenclature, the suffix of the parent alkane is modified. Instead of the standard "-anoic acid" ending, the suffix is changed to "-enoic acid" to signify the presence of the double bond.1
Additionally, a number is included in the name to specify the exact location of the double bond within the carbon chain. The numbering of the chain begins at the carboxyl group carbon, which is designated as carbon 1.1