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Benzene reacts with n -propyl chloride in the presence of anhydrous AlCl 3 to give predominantly

Options

  1. An -Propyl benzene
  2. BIsopropyl benzene
  3. C3-Propyl-1-chloro benzene
  4. D1-Chloro-3-n-propyl benzene

Correct answer

B. Isopropyl benzene

Step-by-step solution

This reaction is known as Friedel Craft's alkylation reaction. in presence of anhydrous AlCl 3 , n-propyl chloride introduce an alkylating agent. It is an electrophilic substitution reaction. Reaction occurs in following step. Generation of electrophile. CH 3 CH 2 CH 2 Cl + AlCl 3 → CH 3 CH 2 CH 2 + + AlCl 4 - Carbocation formed in step 1 rearranges to form secondary carbocation. CH 3 CH 2 CH 2 + ↔   CH 3 CH + CH 3             1 °         &

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