Claisen Rearrangement
摘要
The Claisen, para-Claisen rearrangements, Belluš–Claisen rearrangement; Corey–Claisen, Eschenmoser–Claisen rearrangement, Ireland–Claisen, Kazmaier–Claisen, Saucy–Claisen; orthoester Johnson–Claisen, along with the Carroll rearrangement, belong to the category of [3,3]-sigmatropic rearrangements. The Claisen rearrangement is a concerted process and the arrow pushing here is merely illustrative.