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Claisen Rearrangement

Claisen Rearrangement

Claisen Rearrangement

Claisen Rearrangement

Sigmatropic or electrocyclic intramolecular rearrangement of aryl allyl ether in to gamma, delta-unsaturated carbonyl compound in the presence of heat or Lewis acid is known as Claisen rearrangement. Sigmatropic rearrangement involves migration of s bond from one end of p system to others.

Reaction mechanism of this reaction closely resembles that of Diels- Alder reaction and is:

Aliphatic Claisen rearrangement is similar to aromatic Claisen rearrangement allyl vinyl ether in to gamma, delta-unsaturated carbonyl compound.

 

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