The group that activates benzene ring towards electrophilic substitution reaction is-
1. | OH | 2. | NO2 |
3. | CN | 4. | COOH |
The alkoxy group in aryl alkyl ethers activate the benzene ring towards -
1. Nucleophilic addition reaction
2. Electrophilic addition reaction
3. Nucleophilic substitution reaction
4. Electrophilic substitution reaction
An appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene is/are :
1. | |
2. | |
3. | |
4. |
In Kolbe’s reaction,
the product formed will be -
1. Para-salicylic aldehyde
2. Ortho-salicylic aldehyde
3. Para-salicyclic acid
4. Ortho-salicyclic acid
In Reimer-Tiemann reaction,
the product will be -
1. ortho-Salicylaldehyde
2. para-Salicylaldehyde
3. meta-Salicylaldehyde
4. all of the above
In Williamson ether synthesis, the major product would be:
1. 1-Methoxypropane
2. 2-Methoxypropane
3. 3-Methoxypropane
4. All of the above
Unsymmetrical ether will be the product in -
(1) Kolbe’s reaction.
(2) Reimer-Tiemann reaction.
(3) Williamson ether synthesis.
(4) None of the above.