Synthesis, characterization and properties of aryl-fused bis-BN dihydropyrenes was written by Zhang, Jinyun;Liu, Fude;Sun, Zhe;Li, Chenglong;Zhang, Qian;Zhang, Chen;Liu, Zhiqiang;Liu, Xuguang. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2018.HPLC of Formula: 148231-12-3 This article mentions the following:
Aryl-fused bis-BN dihydropyrenes such as I were prepared from 5,8-dibromoquinoxaline (prepared in four steps from o-phenylenediamine), arylboronic acids, and PhBCl2 using an amino-directed borylation reaction as the key step.. The UV/visible and fluorescence spectra, oxidation potentials, and optical bandgaps for four of the aryl-fused bis-BN dihydropyrenes were determined; their NICS aromaticities and the structures and energies of their HOMO and LUMO were calculated The aryl-fused bis-BN dihydropyrenes showed blue emission, and their phys. properties could be finely tuned through varying the fused aryl rings. The complexation of fluoride ion by the bis-BN dihydropyrenes was determined; the fluoride ion response depended strongly on the fused aryl rings. The structures of I and of two other aryl-fused bis-BN dihydropyrenes were determined by X-ray crystallog. In the experiment, the researchers used many compounds, for example, 5,8-Dibromoquinoxaline (cas: 148231-12-3HPLC of Formula: 148231-12-3).
5,8-Dibromoquinoxaline (cas: 148231-12-3) belongs to pyrazine derivatives. Pyrazine derivatives have antitumor, antibiotic, anticonvulsant, antituberculous and diuretic effects as well as kinase, enzymatic and potent tubulin and FtsZ polymerization inhibitory activities. A number of pyrazine-based derivatives were used as dyes or fluorescent probes.HPLC of Formula: 148231-12-3