MHT CET 2022 Chemistry question

What is the IUPAC name of mesityl oxide?

(A)4 – methylpent – 2 –oxo– 3 -ene
(B)2 – methyl – 4 – oxo- 2 - ene
(C)2 – methylpent – 2 – en – 4 - one
(D)4 – methylpent – 3 – en – 2 - oneCorrect

Answer: (D)

Solution

Mesityl oxide is , the condensation product of two acetone molecules. Number the chain from the end nearest the principal functional group (ketone): . The ketone gets locant 2, the double bond locant 3, and the

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Question ID VK-094274