One or More CH, CC, and/or C C Bond(s) Formed by Rearrangement

摘要: This chapter reviews rearrangement reactions that form a double bond and the period covered is 1995–2003. The discussed have broad scope and, although major emphasis given to synthetic aspects, especially in area of natural products synthesis, mechanistic (and computational calculations) stereochemical features (including asymmetric catalysis) are also mentioned. The first section deals with hydrogen migration different orders, [1,2]- [1, j ]-, including sigmatropic, acid-, base-, metal-catalyzed migrations hydrogen. In second section, [1, j]-rearrangements involving C-migration collected, sigmatropic vinylcyclopropanes vinylcyclobutanes. The [3,3]-sigmatropic rearrangements comprising Cope rearrangement, its variants, thermal, photochemical, catalyzed, examined. heteroatom versions: oxy-Cope anionic oxy-Cope), aza-Cope, oxonia-Cope included. Claisen variants: Ireland–Claisen, Johnson–Claisen, Eschenmoser–Claisen, Carroll, thia-Claisen, aza-Claisen been final provides information about tandem higher rearrangements, cyclopropane ring-opening epoxide rearrangements.