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NEET2023ChemistryAlcohols Phenols and EthersActual

Identify the final product [D] obtained in the following sequence of reactions. CH 3 CHO → H 3 O + i )   LiAlH 4 A → ∆ H 2 SO 4 B → HBr C → Na / Dry   ether C 6 H 5 Br D

Options

  1. ACH ≡ C - Na +
  2. BC 4 H 10

Correct answer

B. C 4 H 10

Step-by-step solution

LiAlH 4 is a strong reducing agent. It will reduce acetaldehyde to primary alcohol (Ethanol). Then ethanol on dehydration gives ethene. The formed alkene on bromination gives alkyl halide which undergo Wurtz-fittig reaction in the presence of sodium/dry ether. The complete reaction is given below:

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