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Ketone from a nitrile and a Grignard reagent

This type of question, asked 6 times: 3 May 2023 S2, 11 May 2023 S1, 11 Apr 2026 S1, 17 Apr 2026 S2, 18 Apr 2026 S1, 12 May 2026 S2. All 6 questions below, oldest first.

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  1. Question 1

    3 May 2023 S2

    65
    What is the product obtained when benzonitrile is treated with C6H5MgBrC_6H_5MgBr in dry ether and then hydrolyzed?

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  2. Question 2

    11 May 2023 S1

    57
    Identify reagent used for preparation of benzophenone from benzonitrile?

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  3. Question 3

    11 Apr 2026 S1

    43
    Identify the product obtained when Grignard reagent reacts with alkyl cyanide followed by acid hydrolysis.

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  4. Question 4

    17 Apr 2026 S2

    41
    Identify the product 'Y' in the following reaction Benzonitrile →C6H5MgBr/dry etherX→H3O+Y+MgBr(OH)+NH3\xrightarrow{\mathrm{C_6H_5MgBr}/\text{dry ether}} X \xrightarrow{\mathrm{H_3O^+}} Y + \mathrm{MgBr(OH)} + \mathrm{NH_3}

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  5. Question 5

    18 Apr 2026 S1

    41
    Benzonitrile on reaction with a reagent in dry ether followed by hydrolysis forms benzophenone along with ammonia and hydroxymagnesium bromide. Identify the reagent used in above transformation.

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  6. Question 6

    12 May 2026 S2

    42
    Identify the product obtained when acetonitrile reacts with methyl magnesium chloride in dry ether followed by acid hydrolysis.

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