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Question

Ketone reacts with Grignard reagent to produce tertiary alcohol via which of the following mechanism?

A
Nucleophilic substitution
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B
Nucleophilic addition
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C
Electrophilic substitution
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D
Electrophilic addition
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Solution

The correct option is B Nucleophilic addition
Magnesium can be reacted with alkyl halides or aryl halides to form Grignard reagents. The organic halide is added to a magnesium suspension in an dry ether solvent. It is important to note that the reagent can be made with alkyl chlorides, bromides, and iodides but not with fluorides. Grignard reagent can act as a nucleophile in the absence of acidic hydrogen. It undergoes nucleophilic addition when reacts with carbonyl compounds.


Hence, the correct answer will be option (b).

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