The structure of 4-Methylpent-3-en-2-one suggests that it is derived from a pentanone (5-carbon ketone) with a methyl group attached to the fourth carbon and a double bond between the third and fourth carbon. Among the given options, the correct choice is (A) Two molecules of CH3COCH3 (acetone). In this case, acetone (CH3COCH3) acts as both the enol and the carbonyl compound. The aldol condensation between two molecules of acetone can form a β-hydroxy ketone intermediate. Subsequent dehydration of the β-hydroxy ketone will lead to the formation of 4-Methylpent-3-en-2-one. Therefore, the correct choice is (A) Two molecules of CH3COCH3 (acetone).
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Top Questions on Aldehydes, Ketones and Carboxylic Acids
Alcohols are characterized by the presence of the hydroxyl (-OH) functional group, which makes them polar and capable of forming hydrogen bonds. They are typically classified as primary, secondary, or tertiary, depending on the number of alkyl groups attached to the carbon atom bearing the hydroxyl group. Alcohols undergo various chemical reactions, including oxidation, dehydration, and esterification.
Phenols are organic compounds that contain an -OH group attached to an aromatic ring. They are weaker acids than carboxylic acids but stronger acids than alcohols due to the resonance stabilization of the phenoxide ion. Phenols undergo various chemical reactions, including electrophilic substitution and oxidation.
Ethers are organic compounds that contain an oxygen atom bonded to two alkyl or aryl groups. They are characterized by their low boiling points and are often used as solvents. Ethers undergo various chemical reactions, including cleavage of the C-O bond and oxidation.
In summary, alcohols, phenols, and ethers have distinct chemical properties due to the presence of the hydroxyl or ether functional group. Understanding these properties is important for understanding their reactivity and potential applications in various fields, including chemistry, biology, and industry.
