Azepine‐ or Oxepine‐embedded Double Saddle‐Helix Nanographenes

Authors :: Ranran Li
Bin Ma
Run‐Ying He
Bin Zhang
Yi‐Kang Zhang
Shi‐Yu Feng
Peng An
Source :: Chemistry – An Asian Journal. 17
Publication Year :: 2021
Publisher :: Wiley, 2021.
Abstract: The azepine- and oxepine-embedded polycyclic aromatic hydrocarbons (PAH) 1-3, as the hexa-peri-hexabenzocoronene (HBC)-based nanographenes (NG) were designed and synthesized by Diels-Alder reaction of cyclic alkene with tetrachlorothiophene-S,S-dioxide, followed by Suzuki-Miyaura cross-coupling and Scholl-type cyclodehydrogenation. Due to the strained seven-membered ring and the inherent structural pattern, heteroatom-doped NGs 1-3 show C