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Organic conversion

Benzene to ethylbenzene

1 step: Friedel-Crafts alkylation

Class 11, Chapter 9 Hydrocarbons

  1. BenzeneC₆H₆Arene
  2. Step 1

    CH₃CH₂Cl, anhydrous AlCl₃

    Friedel-Crafts alkylation
    i

    Friedel-Crafts alkylation with a primary halide.

    EthylbenzeneC₆H₅CH₂CH₃Arene

Exam answer

  1. Step 1: Benzene to ethylbenzene: CH₃CH₂Cl, anhydrous AlCl₃.
Alternative routes (1)
  • Benzene → Acetophenone → Ethylbenzene
    1. Benzene to acetophenone: CH₃COCl, anhydrous AlCl₃.
    2. Acetophenone to ethylbenzene: Zn-Hg, conc. HCl.
Why these reagents

Reagent and reason, step by step

  • Step 1: Benzene to ethylbenzene: CH₃CH₂Cl, anhydrous AlCl₃ Friedel-Crafts alkylation with a primary halide.
Questions

Benzene to ethylbenzene: quick answers

How many steps does it take to convert benzene to ethylbenzene?

1 step: Benzene, then ethylbenzene.

Which named reaction is used to convert benzene to ethylbenzene?

Friedel-Crafts alkylation. Benzene reacts with an alkyl halide in the presence of anhydrous AlCl3 to give an alkylbenzene.

What is the reagent for step 1 of benzene to ethylbenzene?

Benzene to ethylbenzene: CH₃CH₂Cl, anhydrous AlCl₃. Friedel-Crafts alkylation with a primary halide.

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