Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202619 April 2026Evening ShiftChemistryAminesActual

Which from following reactions occurs by removal of -CO- group from amide ?

Options

  1. AGabriel phthalimide synthesis
  2. BAmmonolysis of halides
  3. CMendius reduction
  4. DHofmann degradation

Correct answer

D. Hofmann degradation

Step-by-step solution

Hofmann bromamide degradation reaction involves the conversion of a primary amide to a primary amine with one carbon atom less than the original amide. The general reaction is given by: R-CO-NH₂ + Br₂ + 4NaOH R-NH₂ + Na₂CO₃ + 2NaBr + 2H₂O In this reaction, the carbonyl group ( -CO- ) is removed from the amide as sodium carbonate. Answer: Hofmann degradation

Practice Amines on Quantrex Academy →

More from Amines

Identify the final product formed when benzenamine reacts with the given reagents in the sequential order as: i. (CH₃- CO )₂ O / Pyridine. ii. Conc. HNO₃ + H₂ SO₄ & then reacted wi 2026Choose the incorrect statement. 2026A Nitrogen containing organic compound with molecular formula C₃ H₅ N undergoes the following reactions. C₃ H₅ N + Na / Hg in C₂ H₅ OH [A] [A] + CH₃ COCl / NaOH (aq) [B] [A] + CHCl 2026The reagent used in carbylamine reaction is ----------------------- and the product of the reaction will be --------------- 2026Which of the following is the correct reaction of Hinsberg's reagent with primary, secondary and tertiary amines? 2026Identify the correct order of the type of reactions taking place in this sequence: 2026The number of structural isomers possible for a compound with molecular formula C ₃ H ₉ N is: 2026Identify the name of the reaction involved in conversion of A→B and name the compound B. ( CH ₃ CN [ H ₂ O ] H ⁺ A [ H ⁺ / H ₂ O ] Cl 2 / Red Phosphorous B ) 2026 Full Amines list All MHT CET PYQs