NEETChemistryHydrocarbons
Match List I with List II. List I List II (A) But-1-ene (i) B ₂ H ₆ (ii) H ₂ O ₂/ OH ^- PCC (I) Butan-2-one (B) But-1-ene H ₂ O / H ^+ CrO ₃ (II) Ethanal (C) But-1-ene (i) B ₂ H ₆ (ii) H ₂ O ₂/ OH ^- (i) alk. KMnO ₄ (ii) H ₃ O ^+ (III) Butanal (D) But-2-ene (i) O ₃ (ii) Zn / H ₂ O (IV) Butanoic acid Choose the correct answer from the options given below:
Options
- A(A)-(IV), (B)-(I), (C)-(III), (D)-(II)
- B(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
- C(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
- D(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
Correct answer
B. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Step-by-step solution
(A) Hydroboration-oxidation of but-1-ene yields butan-1-ol (anti-Markovnikov addition of water). Oxidation of butan-1-ol with PCC (a mild oxidizing agent) yields butanal. Thus, (A) matches with (III). (B) Acid-catalyzed hydration of but-1-ene yields butan-2-ol (Markovnikov addition). Oxidation of butan-2-ol with CrO ₃ yields butan-2-one. Thus, (B) matches with (I). (C) Hydroboration-oxidation of but-1-ene yields butan-1-ol. Oxidation with alkaline KMnO ₄ (a strong oxidizing agent) followed by acidification yields b