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Reported here is the step‐by‐step dearomatization of a highly aromatic polycyclic aromatic hydrocarbon (PAH), the hexa‐peri‐hexabenzocoronene (also called as “superbenzene”), to give a series of superbenzoquinones containing two, four, and six ketone groups. Different from traditional PAH‐based quinones, these superbenzoquinones show open‐shell multiradical character by rearomatization in the open‐shell...
Non‐alternant, non‐benzenoid π‐conjugated polycyclic hydrocarbons (PHs) are expected to exhibit very different electronic properties from all‐benzenoid PHs. Reported herein are the syntheses and physical properties of four derivatives of two azulene‐fused s‐indacene isomers, the diazuleno[2,1‐a:2′,1′‐g]‐s‐indacene (DAI‐1) and diazuleno[2,1‐a:1′,2′‐h]‐s‐indacene (DAI‐2). The backbone of both isomers...
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