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Question
Explain the fact that in alkyl aryl ethers, the alkoxy group is ring activating and ortho/para directing towards electrophilic aromatic substitution.
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Solution
- Resonance structures of alkyl aryl ethers are as follows:
- The +R effect of −OR the group results in increased electron density at the para- and two ortho positions.
Hence, the alkoxy group in aromatic ether is a ring activating and ortho/para-directing group towards electrophilic aromatic substitution.
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