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Question

Hydrolysis of the adduct formed form the reaction of ________ with methyl magnesium bromide gives 2-Methylpropan-2-ol.

A
Methanal
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B
Ethanal
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C
Propanal
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D
Propanone
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Solution

The correct option is D Propanone
Grignard reagent react with formaldehyde to form 1 alcohol.
Grignard reagent react with aldehyde except formaldehyde to form 2 alcohol.
Grignard reagent react with ketone to form 3 alcohol.
2-Methylpropan-2-ol is a tertiary alcohol which is produced from the hydrolysis of the adduct formed between a ketone and a Grignard reagent. Hence option (d) is correct.

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