Question
Write chemical equations for the following reactions:
i. Propanone is treated with dilute $Ba ( OH )_2$.
ii. Acetophenone is treated with $Zn ( Hg ) / Conc . HCl$
iii. Benzoyl chloride is hydrogenated in presence of $Pd / BaSO _4$.

Answer

  1. This is a self-aldol condensation reaction.
  1. The reaction of aldehydes and ketones with zinc amalgam (Zn/ Hg) in concentrated HCl, reduces the aldehyde or ketone to a hydrocarbon,and is called Clemmensen reduction.
  1. Benzoyl chloride is hydrogenated over catalyst $Pd-BaSO_4$ to give benzaldehyde. This reaction is called Rosenmund Reaction.

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