1374751-47-9Relevant academic research and scientific papers
A cycloparaphenylene nanoring with graphenic hexabenzocoronene sidewalls
Lu, Dapeng,Wu, Haotian,Dai, Yafei,Shi, Hong,Shao, Xiang,Yang, Shangfeng,Yang, Jinlong,Du, Pingwu
supporting information, p. 7164 - 7167 (2016/06/09)
Herein we report the synthesis of a novel hexabenzocoronene-containing cycloparaphenylene carbon nanoring, cyclo[12]-paraphenylene[2]-2,11-hexabenzocoronenylene, by metal-mediated cross-coupling reactions. The nanoring was accomplished by rationally designed palladium-catalyzed coupling of diborylhexabenzocoronene and L-shaped cyclohexane units, followed by nickel-mediated C-Br/C-Br coupling and the aromatization of cyclohexane moieties. The structure was confirmed by NMR and HR-MS. Especially, the cycloparaphenylene structure is firstly observed by STM. The photophysical properties were studied using UV-Vis spectroscopy, photoluminescence (PL) spectroscopy, and theoretical calculations.
Synthesis of oxygen-substituted hexa-peri-hexabenzocoronenes through ir-catalyzed direct borylation
Yamaguchi, Ryuichi,Hiroto, Satoru,Shinokubo, Hiroshi
supporting information; experimental part, p. 2472 - 2475 (2012/07/28)
Direct C-H borylation of hexa-peri-hexabenzocoronenes (HBCs) has been achieved under iridium catalysis, which allows efficient synthesis of hydroxy-substituted HBCs by oxidation of the boryl groups. Further oxidation of dihydroxy HBC with phenyliodine bis(trifluoroacetate) (PIFA) afforded tetraoxo-substituted HBC without any regioisomers, which can be considered as a π-extended quinone.
