Syntheses of Azulene Embedded Polycyclic Compounds

Abstract

This review focuses on obtaining embedded azulene polycyclic molecules treated according to their particular structure. The division of material into the azulene unit grafted only on one or two bonds and poly-fused azulene compounds was suggested with the intention of facilitating the presentation and assimilation of information. The similarity of some structural features in the compounds included in different analyzed classes results in the presence of the same synthesis protocol in several places. Obtaining benz[a]azulenes, azulene-fused acenes, and helicenes or azulene-embedded nanographene, along with other compounds, is presented.

Linear Non-benzenoid Isomer of Acene Fusing Chrysene with Azulene Units

“…Furthermore, most of the reported azulene-fused acenes have a zigzag edge, while those with an armchair edge are seldom reported. 37 Thus, the demand for new azulene-fused molecules with a facile synthetic method remains high to further elucidate their structure−property relationships. This study presents a linear non-benzenoid acene with an armchair edge, termed diazuleno[2,1-a:2′,1′-j]chrysene (diACh), featuring two azulene units and one chrysene unit, which is an isomer of both BNP and non-benzenoid diAzT with a zigzag edge (Scheme 1b).…”