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प्रश्न
Which of the following is an appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene and why?
 |
 |
| (i) | (ii) |
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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.
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संबंधित प्रश्न
Explain the mechanism of the following reaction:
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
Write the name of the reagent and equation for the preparation of the following ethers by Williamson’s synthesis:
1-Methoxyethane
Explain the following with an example.
Williamson ether synthesis
Dehydration of alcohol to ethers is catalysed by:
\[\ce{(CH3)3CONa + CH3CH2Cl ->[-NaCl] (CH3)3COC2H5}\] is called:
The Williamson ether synthesis produces ethers by reacting an
Identify the following named reaction
\[\ce{C2H5Br ->[NaOCH3] C2H5OCH3}\]
Williamson's synthesis of ether is an example of ______.
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
Write the name of the reagent and equation for the preparation of the following ether 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.
What will be the product (X and A)for the following reaction
\[\ce{acetylchloride->[i)CH3MgBr][ii)H3O+]X ->[acidk2crp3]A}\]
Short Answer Question.
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
Write the name of reagent and equation for the preparation of the following ether by Williamson’s synthesis:
2-Methoxy-2-methylpropane
