Abstract:This manuscript is a literature review of major [3,3]-sigmatropics rearrangements, but specifically Claisen rearrangement, commonly used in organic synthesis over the past 16 years. Rearranged products result from a thermodynamic stability facet. In pericyclic reactions the term sigmatropic shift or sigmatropic rearrangement is better suited than rearrangement. Claisen s rearrangements are among the most well-known pericyclic reactions governed by the WoodwardHoffmann rules. The principles of Claisen rearrange… Show more
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