Aldehydes and Ketones – Part 2 | Organic Chemistry 3

1. Synthesis of a hydrazone:
   
   
    
2. Wolff-Kishner reduction:
   
   
   
   Mechanism:
   
   

Mechanism:

Mechanism:

1. Preparation of the phosphorus ylides:
   
   
    
2. Wittig reaction:
   
   

Mechanism:

Oxidation by peroxycarboxylic acids

With asymmetric ketones, esters can be selectively formed by migration of only one of the substituents. Migratory aptitudes in the Baeyer-Villiger reaction: Methyl  <  Primary alkyl < Phenyl ~ Secondary alkyl < Tertiary alkyl