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CBSE - XII Science - Chemistry - Aldehydes, Ketones and Carboxylic Acids

Aldol condensation/

Asked by 6th August 2012, 4:48 PM
Answered by Expert


Aldol condensation is observed in carbonyl compounds 
The Aldol Condensation of Aldehydes and ketones occur by similar mecanism

  • Reagents : commonly a base such as NaOH or KOH is added to the aldehyde.
  • The reaction involves an enolate reacting with another molecule of the aldehyde.
  • Remember enolates are good nucleophiles and carbonyl C are electrophiles.
  • The products of these reactions are b-hydroxyaldehydes or aldehyde-alcohols = aldols.
  • The simplest aldol reaction is the condensation of ethanal. This is shown below in 2 different representations
  • It may occur via these two mecanisms 
Answered by Expert 6th August 2012, 5:29 PM

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