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Karnataka Board PUCPUC Science 2nd PUC Class 12

Which of the following is an appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene and why? (i) Br NO2 + CH3ONa (ii) ONa NO2 + CH3Br

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Question

Which of the following is an appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene and why?

(i) (ii)
Short Answer
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Solution

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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Chapter 7: Alcohols, Phenols and Ethers - Intext Questions [Page 220]

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NCERT Chemistry Part 1 and 2 [English] Class 12
Chapter 7 Alcohols, Phenols and Ethers
Intext Questions | Q 7.11 | Page 220

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