Identify the compound 'A' in the following sequence of reactions. A [ Dry ether ] C_2H_5MgBr B H_3O^+ 3-Methylpentan-3-ol

MHT CET 2023 Chemistry question

Identify the compound 'A' in the following sequence of reactions. 3-Methylpentan-3-ol

(A)Propanal
(B)Propanone
(C)Butanal
(D)ButanoneCorrect

Answer: (D)

Solution

3-Methylpentan-3-ol is the tertiary alcohol : the carbinol carbon carries two ethyl groups and one methyl group. A tertiary alcohol is formed when a Grignard reagent adds to a ketone and the adduct (B, the magnesium alkoxide) is hydrolysed with . One of the ethyl groups

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Question ID VK-098164