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Geminal and Vicinal Dihalides...

Geminal and Vicinal Dihalides

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Knowledge Check

  • R-X+Mgoverset("Ether",Delta)tooverset(delta-)R-overset(delta+)Mg-X Grignard reagents may be prepared from 1^(@),2^(@) and 3^(@) halides as well as from vinyl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Which of the following halides is most reactive for the preparation of Grignard reagent?

    A
    B
    C
    D

  • R-X+Mgoverset("Ether",Delta)tooverset(delta-)R-overset(delta+)Mg-X Grignard reagents may be prepared from 1^(@),2^(@) and 3^(@) halides as well as from vinyl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Identify structure of product :

    A
    B
    C
    D

  • R-X+Mgoverset("Ether",Delta)tooverset(delta-)R-overset(delta+)Mg-X Grignard reagents may be prepared from 1^(@),2^(@) and 3^(@) halides as well as from vinyl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Which of the following compounds can form Grignard reagent on reaction with Mg/Ether?

    A
    `underset(Br)underset(|)CH_(2)-underset(Br)underset(|)CH_(2)`
    B
    C
    D

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    The product of which of the following reactions is not a vicinal dihalide?

    CH_2Br–CH_2-CH_2 Br is a vicinal dihalide. True/False

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