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Reimer-Tiemann reaction introduces an al...

Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reacrtion involves electrophilic aromatic subsititution. It is a general method for the synthesis of subsituted salicyladehydes as depiced below:

Which one of the following reagents is used in the above reaction ?

A

`aq. NaOH+CH_(3)CI`

B

`aq. NaOH+CH_(2)CI_(2)`

C

`aq. NaOH+CHCI_(3)`

D

`aq. NaOH+CCI_(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
NA
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Reimer -Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substituted salicyladehydes as depicted below. The electrophile in this reaction is

Knowledge Check

  • Reimer-Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substituted salicyladehydes as depicted below. Which one of the following reagents is used in the above reaction ?

    A
    `"aq. NaOH"+CH_(3)Cl`
    B
    `"aq. NaOH"+CH_(2)Cl_(2)`
    C
    `"aq. NaOH"+CHCl_(3)`
    D
    `"aq. NaOH"+"CCl"_(4)`

  • Reimer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol, ortho to the hydroxyl group. Thi reaction involves electrophilic aromatic substitution. It is a general method for the synthesis of substituted salicylaldehydes as depicted below: Q. Which one of the following reagents is used ini the above reaction?

    A
    aq. `NaOH+CH_(3)Cl`
    B
    aq. `NaOH+CH_(2)Cl_(2)`
    C
    aq. `NaOH+CHCl_3`
    D
    aq. `NaOH+C Cl_(4)`

  • Riemer-Tiemann reaction intorduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substitued salicyladehydes as depicted below. Which one of the following reagents is used in the above reaction?

    A
    aq. NaOH +`CH_(3)Cl`
    B
    aq. `NaOH+CH_(2)Cl_(2)`
    C
    aq. `NaOH+CHCl_(3)`
    D
    aq. `NaOH+CCl_(4)`

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