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प्रश्न
Nitration is an example of aromatic electrophilic substitution and its rate depends upon the group already present in the benzene ring. Out of benzene and phenol, which one is more easily nitrated and why?
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उत्तर
Phenol is more easily nitrated than benzene as the presence of –OH group in phenol increases the electron density at ortho and para positions in benzene ring by +R effect. The nitration, being an electrophilic substitution reaction is more facile where the electron density is more.
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संबंधित प्रश्न
Give simple chemical tests to distinguish between the following pairs of compounds: Benzoic acid and Phenol
Write the final product(s) in each of the following reactions:
Write the structures of A, B, C, D and E in the following reactions:
Write the equation involved in the following reaction:
Kolbe’s reaction
When phenol is treated with excess bromine water, it gives:
On distilling phenol with Zn dust, one gets:
In the reaction of phenol with CHCl3 and aqueous NaOH at 343 K, the electrophile attacking the ring is:
The electrophile involved in Reimer-Tiemann reaction of phenol with CHCl3 in presence of NaOH:
Phenol does not undergo nucleophilic substitution reaction easily due to ______.
Which of the following are used to convert \[\ce{RCHO}\] into \[\ce{RCH2OH}\]?
(i) \[\ce{H2/Pd}\]
(ii) \[\ce{LiAlH4}\]
(iii) \[\ce{NaBH4}\]
(iv) Reaction with \[\ce{RMgX}\] followed by hydrolysis
Convert the following:
Phenol to N-phenylethanamide.
Which of the following reacts with phenol to give salicylaldehyde after hydrolysis?
For the pair phenol and cyclohexanol, answer the following:
Give one chemical test to distinguish between the two.
How can phenol be prepared from anisole? Give reaction.
