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Which of the following compounds reacts ...

Which of the following compounds reacts with primary amine `(RNH_(2))` to from a symmetrical disubstituted urea ?

A

`COCI_(2)`

B

`R'N=C=O`

C

`R 'N=C=S`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`2RNH_(2)+underset("carbonyl chloride")(COCI_(2))rarrunderset("symmetrical disubsti tuted urea")(RNH- overset(S)overset(||)C-NHR`
`RNH_(2)+underset("Isocyanate")(R'N=C=O_())rarrunderset("unsymmetrical dis tituted urea")(RNH- overset(S)overset(||)C-NHR`
`RNH_(2)+underset("Thiocyanate")(R'N=C=S)rarrunderset("Thiourea")(RNH- overset(S)overset(||)C-NHR` .
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Knowledge Check

  • Which of the following compounds is an amine ?

    A
    B
    C
    D

  • Which of the following compounds is an amine?

    A
    B
    C
    D

  • Which of the following reaction will not give primary amine ?

    A
    `CH_(3)CONH_(2) overset(KOH, Br_(2))(rarr)`
    B
    `CH_(3)CN overset(LiAlH_(4))(rarr)`
    C
    `CH_(3)NC overset(LiAlH_(4))(rarr)`
    D
    `CH_(3)CONH_(2) overset(LiAlH_(4))(rarr)`

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