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GUJCET · Chemistry · Aldehydes, Ketones, and Carboxylic Acids

What is the IUPAC name of the Mesityl oxide?

  1. A 3-methylpent-4-en-2-one
  2. B 4,4-dimethylbut-3-en-2-one
  3. C 4-methylpent-3-en-2-one
  4. D 1-methylpent-2-en-4-one
Verified Solution

Answer & Solution

Correct Answer

(C) 4-methylpent-3-en-2-one

Step-by-step Solution

Detailed explanation

The structure of Mesityl oxide is \((CH_3)_2C=CHCOCH_3\). Numbering the longest carbon chain containing both the ketone and alkene groups, starting from the end closer to the ketone: