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To prepare quaternary ammonium compounds...

To prepare quaternary ammonium compounds we heat _____ with a large excess of alky1 halide .

A

ammonia

B

primary amine

C

secondary amine

D

any of these

Text Solution

Verified by Experts

The correct Answer is:
D
`NH_(3)+4RXoverset(Delta)rarrR_(4)overset(+)NX+ 3HX`
`RNH_(2)+3RXoverset(Delta)rarrR_(4)overset(+)NX+2HX`
`R_(2)NH+2RXoverset(Delta)rarrR_(4)overset(+)NX+HX`
We can also use a tertiary amine to yield a quaternary compound For example ethyltrimethylammonium iodide can be prepared by heating trimethylamine with ethy1 iodide
`(CH_(3))_(3)N+C_(2)H_(5)I overset(Delta)rarr(CH_(3))_(3)overset(+)NC_(2)H_(5)Ibar` .
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Preparation of alkyl halides-1

(a) An ambident nucleophile is: (i) Ammonia (ii) Ammonium ion (iii) Chloride ion (iv) Nitrite ion (b) Haloalkanes and haloarenes are organohalogen compounds. (i) Suggest a method for the preparation of alkyl chloride. (ii) Aryl halides are less reactive towards nucleophilic substitution reactions. Give reasons.

Knowledge Check

  • The general formula of quaternary ammonium compound is

    A
    `R-NH_(2)`
    B
    `R_(3)N`
    C
    `R_(4)N^(+)X^(-)`
    D
    `NH_(4)X`

  • Quaternay ammonium halide is heated with moist silver oxide gives

    A
    quaternary ammonium hydroxide
    B
    ammoniun hydroxide
    C
    alcholes
    D
    alkene

  • Ammonium compound which on heating does not give NH_3 is

    A
    `NH_4NO_2`
    B
    `(NH_4)_2CO_3`
    C
    `(NH_4)_2SO_4`
    D
    `NH_4Cl`

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    Ammonium compound which upon heating does not give ammonia is :

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