Side Reactions
A common side reaction of the Oppenauer oxidation is the base catalyzed aldol condensation of aldehyde products, which have α-hydrogens to form either ß-hydroxy aldehydes or α, ß-unsaturated aldehydes.
Another side reaction is the Tischenko reaction of aldehyde products with no α-hydrogen, but this can be prevented by use of anhydrous solvents. Another general side reaction is the migration of the double bond during the oxidation of allylic alcohol substrates.
Read more about this topic: Oppenauer Oxidation
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