Advertisements
Advertisements
Question
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?
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Write the main product(s) in each of the following reactions:
Write the equation involved in the following reaction:
Reimer-Tiemann reaction
Give the equation of the following reaction:
Bromine in CS2 with phenol.
Name the reagent used in the following reaction:
Bromination of phenol to 2, 4, 6-tribromophenol.
When phenol is treated with excess bromine water, it gives:
When phenol is heated with CHCl3 and alcoholic KOH when salicylaldehyde is produced. This reaction is known as ____________.
\[\ce{C2H5OH + SOCl2 ->[Pyridine] C2H5Cl + SO2 + HCl}\]
The above reaction is known as:
Which of the following reactions is used to prepare salicylaldehyde?
Which of the following compounds is aromatic alcohol?
| (A) |  |
| (B) |  |
| (C) |  |
| (D) |  |
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
Out of o-nitrophenol and p-nitrophenol, which is more volatile? Explain.
Convert the following:
Phenol to N-phenylethanamide.
Attacking species in nitration of benzene in presence of fuming HNO3 is
Which of the following reacts with phenol to give salicylaldehyde after hydrolysis?
Write the equations for the following reaction:
Phenol is treated with chloroform in the presence of NaOH
Why ortho-nitrophenol is steam volatile while para-nitrophenol is not?
Write the chemical equation involved in the following reactions:
Acetylation of salicylic add
