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JEE Main202331 Jan 2023Morning ShiftChemistryAldehydes and KetonesActual

Consider the following reaction Propanal + Methanal = → ( ii )   Δ ( iii )   NaCN ( iv )   H 3 O + ( i )   dil .   NaOH P roduct   B ( C 5 H 8 O 3 ) The correct statement for product B is. It is

Options

  1. Aoptically active and adds one mole of bromine
  2. Bracemic mixture and is neutral
  3. Cracemic mixture and gives a gas with saturated NaHCO 3 solution
  4. Doptically active alcohol and is neutrall

Correct answer

C. racemic mixture and gives a gas with saturated NaHCO 3 solution

Step-by-step solution

Propanal and methanal undergo aldol condensation reaction with sodium hydroxide. The α , β -unsaturated compound undergo 1 , 4 - conjugated addition with cyanide ion gives a racemic mixture. The cyanide undergo acidic hydrolysis gives carboxylic acid. Carboxylic acid will give CO 2 gas, with NaHCO 3 solution

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