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NEETChemistryAldehydes and Ketones

Match List I with List II. List I List II Reaction Reagents (A) Hoffmann Degradation (I) Conc. KOH , Δ (B) Clemmensen reduction (II) CHCl 3 , NaOH / H 3 O + (C) Cannizzaro reaction (III) Br 2 , NaOH (D) Reimer-Tiemann reaction (IV) Zn - Hg / HCl

Options

  1. A(A) - III, (B) - IV, (C) - II, (D) - I
  2. B(A) - II, (B) - IV, (C) - I, (D) - III
  3. C(A) - III, (B) - IV, (C) - I, (D) - II
  4. D(A) - II, (B) - I, (C) - III, (D) - IV

Correct answer

C. (A) - III, (B) - IV, (C) - I, (D) - II

Step-by-step solution

(A) Hoffmann degradation reaction: Hoffmann developed a method for the preparation of primary amines by treating an amide with bromine in an aqueous or ethanolic solution of sodium hydroxide. O ∥ R - C - NH 2 + Br 2 + 4 NaOH → R - NH 2 + Na 2 CO 3 + 2 NaBr + 2 H 2 O (B) Clemmensen reduction reaction: The Clemmensen reduction is a reaction that is used to reduce aldehydes or ketones to alkanes using hydrochloric acid and zinc amalgam. (C) Cannizzaro reaction: Aldehydes which do not have an α -hydrogen atom, undergo

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