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Some alkyl halides undergo substitution ...

Some alkyl halides undergo substitution whereas some undergo elimination reaction on treatment with bases. Discuss the structural features of alkyl halides with the help of examples which are responsible for this difference.

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Explain Elimination reactions of alkyl halides.

Why aryl halides undergo electrophilic substitution reactions at o - and p - position ? Why it is less reactive than benzene ?

Knowledge Check

  • Which product is obtained when Anisole undergo Friedel Craft alkylation reaction ?

    A
    p- methoxy toluene
    B
    p-methoxy toluene
    C
    m - methoxy toluene
    D
    (A) and (B) both

  • A primary alkyl halide would prefer to undergo ………. .

    A
    `S_(N)1` reaction
    B
    `S_(N)2` reaction
    C
    `alpha` - Elimination
    D
    Racemisation

  • Assertion (A) : tert-Butyl bromide undergoes Wurtz reaction to give 2, 2, 3, 3 - tetramethyl butane. Reason (R ) : In Wurtz reaction, alkyl halides react with sodium in dry ether to give hydrocarbon containing double the number of carbon atoms present in the halide.

    A
    Assertion and reason both are correct and reason is correct explanation of assertion.
    B
    Assertion and reason both are wrong statements.
    C
    Assertion is correct but reason is wrong statement.
    D
    Assertion and reason both are correct statements but reason is not correct explanation of assertion.

    • Similar Questions

    Explore conceptually related problems

    Which type of rate is observed in dehydrohalgenation ( beta -elimination) reaction of alkyl halide ?

    Write about Wurtz reaction or give the preparation of alkane from alkyl halide by Wurtz reaction with the example and its limitations ?

    Primary alkyl halide C_(4)H_(9)Br (a) reacted with alcoholic KOH to give compound (b). Compound (b) is reacted with HBr to give (c ) which is an isomer of (a). When (a) is reacted with sodium metal it gives compound (d), C_(8)H_(18) which is different from the compound formed when n-butyl bromide is reacted with sodium. Give the structural formula of (a) and write the equations for all the reactions.

    Of the following statements , which are true for S_(N)2 reaction. (a) Tertiar alkyl halides reacts faster than secondary. (b) The absolute configuration of product is opposite to that of the reactant when an optically active substrate is used. (c) The used shows first order kinetics. (d) The rate of the reaction depends markedly on the nucleophilicity of the attacking reagent. (e) The mechanism is one step. (f) Carbocations are intermediate. (g) Rate prop [Alkyl][halides] (h) The rate of the reaction depends on the nature of the leaving group.

    Which of the following alkyl halides will undergo S_(N)1 reaction most readily ?

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