JEE Main 2022 — Haloalkanes and Haloarenes Question with Solution
JEE Main 2022 (26 Jul Shift 1)
Question
Given below are two statements: one is labelled as Assertion and the other is labelled as Reason .
Assertion : Experimental reaction of with aniline and anhydrous does not give and -methylaniline.
Reason : The group of aniline becomes deactivating because of salt formation with anhydrous and hence yields -methyl aniline as the product.
In the light of the above statements, choose the most appropriate answer from the options given below
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
Under the Friedel Craft Reaction condition, the aniline (a Lewis base) binds to the electrophile (a Lewis acid) to give a coordination complex (a salt). Then, the positive charge on the nitrogen is electron withdrawing, and it pulls the electron density of the aromatic ring by . It therefore, deactivates the ring for further alkylation reactions. Finally, the complex precipitates out of the reaction mixture and the alkylation reaction is not observed.
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This is a previous-year question from JEE Main 2022, covering the Haloalkanes and Haloarenes chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.
