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  4. The reaction which involves dichlorocarbene as an electrophile is,

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Q. The reaction which involves dichlorocarbene as an electrophile is,

KCETKCET 2016Alcohols Phenols and Ethers

Solution:

The dichlorocarbene is $:CCl_2$ used as an electrophile $(E^{+})$ in Reimer-Tiemann reaction to give salicylaldehyde.

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$CHCl _{3}$ used in the reaction to generate $:CCl _{2}$

$OH ^{-}+ CHCl _3 \xrightarrow[-H_2O]{} {}^{⊖} CCl _{3} \to Cl^{⊖}+:CCl_2$

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