Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main2015ChemistryCarboxylic Acid DerivativesActual

In the presence of a small amount of phosphorous, aliphatic carboxylic acid reacts with chlorine or bromine to yield a reaction in which, α - hydrogen is been replaced by halogen. This reaction is known as

Options

  1. AEtard reaction
  2. BWolff-Kischner reaction
  3. CRosenmund reaction
  4. DHell-volhard-zelinsky reaction

Correct answer

D. Hell-volhard-zelinsky reaction

Step-by-step solution

This reaction is known as HVZ reaction. Treatment with bromine and a catalytic amount of phosphorus leads to the selective α - bromination of carboxylic acids.

Practice Carboxylic Acid Derivatives on Quantrex Academy →

More from Carboxylic Acid Derivatives

The sum of total number of carbonyl groups ( >C=O ) present in the major products X and Y in the following reactions is ____. 2026Complete the following reaction sequence and give the name of major product 'P'. CH₃-CH₂-C N [ (ii) H₃O^+] (i) OH^-/H₂O/ [ (iv) H₂O] (iii) Cl₂/ Red P P (Major product) 2026The descending order of acidity among the following compounds is: A. Phenol B. 4 -nitrophenol C. 4 -methoxyphenol D. 4 -nitrobenzoic acid E. Benzoic acid Choose the correct answer 2026The correct order of acidic strength of the major products formed in the given reactions, is : A. B. CH ₃ CH ₂ CHO [ ] [ Ag ( NH ₃ )₂ ]⁺, OH ⁻ [ B ] C. CH ₄+ O ₂ [ (ii) Na ₂ Cr ₂ O 2026Monocyclic compounds P , Q , R and S are the major products formed in the reaction sequences given below. The product having the highest number of unsaturated carbon atom(s) is- 2025The correct reaction/reaction sequence that would produce a dicarboxylic acid as the major product is 2025Mixture of 1 g each of chlorobenzene, aniline and benzoic acid is dissolved in 50 mL ethyl acetate and placed in a separating funnel, 5 M NaOH ( 30 mL) was added in the same funnel 2025Which of the following compounds is least likely to give effervescence of CO ₂ in presence of aq. NaHCO ₃ ? 2025 Full Carboxylic Acid Derivatives list All JEE Main PYQs