Numford
Organic conversion

Benzoic acid to benzamide

1 step: condensation

Class 12, Chapter 8 Aldehydes, Ketones and Carboxylic Acids

  1. OHO
    Benzoic acidC₆H₅COOHCarboxylic acid
  2. Step 1

    NH₃, then heat

    i

    The acid first forms the ammonium salt, which loses water on heating.

    H2NO
    BenzamideC₆H₅CONH₂Amide

Exam answer

  1. Step 1: Benzoic acid to benzamide: NH₃, then heat.
Alternative routes (1)
  • Benzoic acid → Benzoyl chloride → Benzamide
    1. Benzoic acid to benzoyl chloride: SOCl₂.
    2. Benzoyl chloride to benzamide: NH₃.
Why these reagents

Reagent and reason, step by step

  • Step 1: Benzoic acid to benzamide: NH₃, then heat The acid first forms the ammonium salt, which loses water on heating.
Questions

Benzoic acid to benzamide: quick answers

How many steps does it take to convert benzoic acid to benzamide?

1 step: Benzoic acid, then benzamide.

Which named reaction is used to convert benzoic acid to benzamide?

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

What is the reagent for step 1 of benzoic acid to benzamide?

Benzoic acid to benzamide: NH₃, then heat. The acid first forms the ammonium salt, which loses water on heating.

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