Computer‐Assisted Investigation of Possible Rearrangements of (Ch)_N (N = 4,6,8,10) Annulenes

Abstract

Application of the computer pro ram for the rationalization and prediction of possible rearrangements in annulenes with the common formia (CH)? (n =4:10) is considered. Processes of [2 + 21-. [2 + 2 +2]-[4+2]-cycloaddition and [4]-, [6 electroc c ic reactions in the families of annulenes are discussed. A lid of all possible reactions proceedkg as [l ,$I-, [1,5]-, [3,3]-siqmatropic shifts in cyclopolyene structures is presented. The whole set of known annulene reactions IS reproduced. A wide set of prospective rearrangements is predicted, including several interesting examples of the degenerate Cope rearrangement.