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प्रश्न
Explain the fact that in alkyl aryl ethers, the alkoxy group is ring activating and ortho/para directing towards electrophilic aromatic substitution.
उत्तर
- 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.
संबंधित प्रश्न
Choose the correct option.
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Write chemical equation of acetyl chloride with ethanol
Write the reaction between ethanol and acetic anhydride.
What is the action of following on diethyl ether?
dil. H2SO4
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/\phantom{......}\\\end{array}\] group?
A mixed ether on hydrolysis gives ____________.
\[\ce{(CH3)2CH - O - CH3 ->[Cold HI] X + Y}\]
\[\ce{X ->[K2Cr2O7][dil. H2SO4] Z}\]
\[\ce{Y ->[NaOH(aq)][\Delta] CH3OH}\]
Identify X, Y and Z.
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\[\ce{(CH3)3C - O - CH3 + HI ->[cold] ?}\]
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Tert-butyl methyl ether on treatment with hydrogen iodide in cold gives ______.
Formation of diethyl ether from ethanol is based oh a ______.
Ethers when dissolved in cold concentrated sulphuric acid forms ______.
Why ethers possess a small net dipole moment?
Explain Williamson's synthesis.
Write preparation of diethyl ether.
