Advertisements
Advertisements
प्रश्न
Which of the following is an appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene and why?
![]() |
![]() |
| (i) | (ii) |
Advertisements
उत्तर
Set (ii) is more appropriate for the preparation of 1-methoxy-4-nitrobenzene.
In the set (i), the CH3O− acts as a nucleophile. But the presence of a bulky
group prevents the nucleophilic attack. In set (ii), the nucleophile
attacks CH3Br and the desired product
is formed.
APPEARS IN
संबंधित प्रश्न
How do you convert the following :
Phenol to anisole
Write the name of the reagent and the equation for the preparation of the following ether by Williamson’s synthesis:
Ethoxybenzene
How is 1-propoxypropane synthesised from propan-1-ol? Write mechanism of this reaction.
Explain the following with an example.
Williamson ether synthesis
Williamson's synthesis of preparing dimethyl ether is a/an ____________.
The Williamson ether synthesis produces ethers by reacting an
Name the suitable alcohol and reagent, from which 2-Chloro-2-methyl propane can be prepared.
Write the equations for the following reaction:
Tert butyl chloride is treated with sodium ethoxide.
The major product [B] in the following reactions is:
\[\begin{array}{cc}\ce{CH3}\phantom{..................................}\\|\phantom{.....................................}\\\ce{CH3 - CH2 - CH - CH2 - OCH2 - CH3 ->[HI][Heat] [A] alcohol ->[H2SO4][\Delta] [B]}\end{array}\]
Williamson's synthesis of ether is an example of ______.
HBr reacts with \[\ce{CH2 = CH - OCH3}\] under anhydrous conditions at room temperature to give ______.
Write the mechanism of the following reaction:
\[\ce{2CH3CH2OH ->[H^+][413 K] CH3-CH2-O-CH2-CH3 + H2O}\]
Write the name of reagent and equation for the preparation of the following ethers by Williamson’s synthesis:
2-Methoxy-2-methylpropane
Identify the product (s) is/are formed when 1-methoxy propane is heated with excess HI. Name the mechanism involved in the reaction.
Identify the product(s) is/are formed when 1-methoxy propane is heated with excess HI. Name the mechanism involved in the reaction.
What will be the product (X and A)for the following reaction
\[\ce{acetylchloride->[i)CH3MgBr][ii)H3O+]X ->[acidk2crp3]A}\]
Write the name of reagent and equation for the preparation of the following ethers by Williamson’s synthesis:
2-Methoxy-2-methylpropane
Identify the product (s) is/are formed when 1-methoxy propane is heated with excess HI. Name the mechanism involved in the reaction.
Write the name of reagent and equation for the preparation of the following ether by Williamson’s synthesis:
2-Methoxy-2-methylpropane


