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  • Arrange the following set of compounds in the order of their decreasing relative reactivity with an electrophile. Give reason.

Arrange the following set of compounds in the order of their decreasing relative reactivity with an electrophile. Give reason.

 

 

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The methoxy group(-OCH_{3})makes anisole more reactive than benzene because it is an electron releasing group and increases the electron density of the benzene ring due to the +R effect.

 

 

Cl group is less reactive than methoxybenzene as it gives +R and -I effect. And, Chlorobenzene is more reactive than -NO_{2} group since the -NO_{2}  gives -I and -R effect.

 

Electrophile is an atom or a molecule that in chemical reaction seeks an atom or molecule containing an electron pair available for bonding. Electrophilic substances are Lewis acids (compounds that accept electron pairs), and many of them are Brønsted acids (compounds that donate protons).

 

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