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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)Cl`

B

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

C

aq. `NaOH+CHCl_(3)`

D

aq. `NaOH+C Cl_(4)`

Text Solution

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The correct Answer is:
C
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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: The structure of the intremediate (I) is:

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: The electrophile in this reaction is:

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 structure of the intermediate I is

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

ALLEN-ALKENE, ALKANE & ALKYNE -EXERCISE-5
  1. Gases released in reaction (I) and (II) are:

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  2. Order of boiling point for the following compounds is-

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  3. Reimer-Tiemann reaction introduces an aldehyde group on to the aromati...

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  4. Reimer-Tiemann reaction introduces an aldehyde group on to the aromati...

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  5. Reimer-Tiemann reaction introduces an aldehyde group on to the aromati...

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  6. Reimer-Tiemann reaction introduces an aldehyde group on to the aromati...

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  7. Assertion: Bromobenzene upon reaction with Br(2)//Fe gives 1,4-dibromo...

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  8. Statement I: Aniline on reaction with NaNO2HCl at 0^@C followed by co...

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  9. In the reaction the intermediate(s) is/are:

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  10. The compound P, Q and S were separately subjected to nitration us...

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  11. The correct acidity order of the following is

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  12. In the reaction, the structure of the product T is:

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  13. Among the following compounds, the most acidic is:

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  14. Compound (A) C(8)H(9)Br. Gives a white precipitate when warmed with al...

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  15. In the reaction shown below the major product (s) formed is/are .

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  16. The reactivity of compound Z with different halogens under appropriat...

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  17. Consider the reaction sequence below:

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  18. Fluorination of an aromatic ring is easily accompolished by treating a...

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  19. The correct statement(s) about the following reaction sequence is (are...

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  20. Among the following reactions (s), which gives (give) tert-butyl benze...

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