The synthesis of [18]Annulene 1,4:7,10-Dioxide-13,16-sulphide

Abstract

[18]Annulene 1,4:7,10-dioxide-13,16-sulphide has been synthesized. The physical properties indicate that this compound is an aromatic system in which there is significant delocalization of the peripheral electrons. However, the compound undergoes addition rather than substitution reactions and therefore exhibits only limited classical aromaticity.