Ethoxybenzene on reaction with hot and concen | vedclass

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Question

(A) The reaction of ethoxybenzene $(C_6H_5-O-CH_2CH_3)$ with hot and concentrated $HI$ involves the cleavage of the $C-O$ bond between the oxygen atom

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ethyl iodide and phenol

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(A) The reaction of ethoxybenzene $(C_6H_5-O-CH_2CH_3)$ with hot and concentrated $HI$ involves the cleavage of the $C-O$ bond between the oxygen atom and the ethyl group.This occurs because the $C-O$ bond between the oxygen and the phenyl ring has partial double bond character due to resonance,making it stronger and harder to break.Therefore,the $I^-$ ion attacks the less sterically hindered ethyl group via an $S_N2$ mechanism.The products formed are phenol $(C_6H_5OH)$ and ethyl iodide $(CH_3CH_2I)$.

Ethoxybenzene on reaction with hot and concentrated $HI$ forms:

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