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Write examples for electron releasing an...

Write examples for electron releasing and electron withdrawing groups.

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Explain the role of electron withdrawing and electron releasing groups on the acidity of carboxylic acids.

A benzene ring deactivated by strong and moderate electron withdrawing group that is, any meta directing group, is not electron rich enough to undergo Friedel-Crafts reactions. Friedel-Crafts reaction also do not occur with NH, group as it react with AlCl, and produce deactivating group Which of the following compounds undergo Friedel-Crafts alkylation reaction?

Knowledge Check

  • Example of electron precise hydride is

    A
    `CH_(4)`
    B
    `NH_(3)`
    C
    `B_(2)H_(6)`
    D
    `H_(2)O`

  • (A): p-Nitrochlorobenzene is more reactive than chlorobenzene in nucleophilic substitution reactions. (R): Electron withdrawing groups like - NO_2 , increase the reactivity of haloarenes in nucleophilic substitution.

    A
    Both A & R are true, R is the correct explanation of A
    B
    Both A & R are true, R is not correct explanation of A
    C
    A is true, R is false
    D
    A is false, R is true

  • (A) Presence of electron withdrawing groups at p-position, increases the acidic strength of phenols (R) Presence of electron withdrawing groups at ortho and para position stabilises the phenoxide ion formed

    A
    Both (A) and (R) are true and (R) is the correct explanation of (A)
    B
    Both (A) and (R) are true and (R) is not the correct explanation of (A)
    C
    (A) is true but (R) is false
    D
    Both (A) and (R) are false

    • Similar Questions

    Explore conceptually related problems

    A benzene ring deactivated by strong and moderate electron withdrawing group that is, any meta directing group, is not electron rich enough to undergo Friedel-Crafts reactions. Friedel-Crafts reaction also do not occur with NH, group as it react with AlCl, and produce deactivating group Which of the following sequence of reaction is correct for the synthesis of product.

    Explain with suitable examples, the following: electron precise and electron - rich hydrides.

    A benzene ring deactivated by strong and moderate electron withdrawing group that is, any meta directing group, is not electron rich enough to undergo Friedel-Crafts reactions. Friedel-Crafts reaction also do not occur with NH, group as it react with AlCl, and produce deactivating group Which of the following cannot be starting material for this compound Ph- underset(O)underset(||)C-CH_2 - Ph ?

    Write the role of electrons in oxidation and reduction.

    When an electron withdrawing or electron releasing group is attached to carbon chain, polarity is induced on the carbon atom and on the substituent attach to it. This permanent polarity is due electron displacement due to difference in electronegativities this is called inductive effect or I effect. The inducitve effect depends in the electronegativity of the substituent. The inductive effect is broadly classified as (i) negative inductive effect or -I effect. (ii) positive inductive effect or +I effect. The group which exhibits the maximum -I effect

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