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Organic conversion

Phenol to 2,4,6-tribromophenol

1 step: substitution

Class 12, Chapter 7 Alcohols, Phenols and Ethers

  1. HO
    PhenolC₆H₅OHPhenol
  2. Step 1

    Br₂ water

    i

    Aqueous bromine gives a white precipitate at once; use Br₂ in CS₂ at low temperature for a mono product.

    HOBrBrBr
    2,4,6-TribromophenolC₆H₂Br₃OHPhenol

Exam answer

  1. Step 1: Phenol to 2,4,6-tribromophenol: Br₂ water.
Why these reagents

Reagent and reason, step by step

  • Step 1: Phenol to 2,4,6-tribromophenol: Br₂ water Aqueous bromine gives a white precipitate at once; use Br₂ in CS₂ at low temperature for a mono product.
Questions

Phenol to 2,4,6-tribromophenol: quick answers

How many steps does it take to convert phenol to 2,4,6-tribromophenol?

1 step: Phenol, then 2,4,6-tribromophenol.

Which named reaction is used to convert phenol to 2,4,6-tribromophenol?

None of the steps has a name. They are substitution, so write the reagent and the condition for each step.

What is the reagent for step 1 of phenol to 2,4,6-tribromophenol?

Phenol to 2,4,6-tribromophenol: Br₂ water. Aqueous bromine gives a white precipitate at once; use Br₂ in CS₂ at low temperature for a mono product.

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