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Question
The electrophilic aromatic substitution proceeds through a:
The electrophilic aromatic substitution proceeds through a:
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Solution
The correct option is C Sigma complex
In electrophilic aromatic substitution, a carbocation is generated which is resonansic stabilized but not aromatic.This cation is called sigma complex because the electrophile is joined to the benzene ring through a new sigma bond.The sigma complex wish to regain its aromatic and it may do so by either a reversal of first step or by loss of proton.Thus, electrophilic aromation substitution proceed through a sigma complex.
In electrophilic aromatic substitution, a carbocation is generated which is resonansic stabilized but not aromatic.
This cation is called sigma complex because the electrophile is joined to the benzene ring through a new sigma bond.
The sigma complex wish to regain its aromatic and it may do so by either a reversal of first step or by loss of proton.
Thus, electrophilic aromation substitution proceed through a sigma complex.
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