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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:

The structure of the intremediate (I) is:

A

B

C

D

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The correct Answer is:
B
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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 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 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 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 ?

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

IIT-JEE PREVIOUS YEAR (CHEMISTRY)-ARYL HALIDE AND PHENOLS-JEE Main And Advanced
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  2. Assertion: Aryl halides undergoes nucleophilic substitution with ease...

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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. The number of resonannce structure for N is

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  7. Amongst the three isomers of the nitrophenol, the one that is least so...

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  8. Phenol is acidic because of the resonance stabilisation of its conjuga...

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  9. Formation of phenol from chlorobenzene is an example of …. Aromatic ...

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  10. The acidity of phenol is due to the ….. Of its anion.

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  11. Carry out the following conversation. Phenol to aspirin Benzoic ac...

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  12. How would you synthesise 4-methoxyphenol from bromobenzene in not mo...

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  13. What would be the major product in the following reaction?

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  14. Explain briefly the formation of the products giving the structures ...

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  15. Complete the following, giving the structures of the principal orga...

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  16. How will you prepare m-bromoiodobenzene from benzene (in not more t...

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  17. Explain the following in one or two sentence only: 'Phenol is an acid...

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  18. Complete the following with appropriate structures:

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  19. Compound A,C(7)H(8)O, is insoluble in water, dilute HCl, and aquenous ...

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  20. Give reason in one or two sentences form the following: 'o-nitrophenol...

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