In 2022,Fan, Chaochao; Wang, Yue; Zhao, Jie; Zhao, Yanxia; Yang, Dong; Li, Boyang; Yu, Le; Yang, Xiao-Juan; Wu, Biao published an article in Inorganic Chemistry. The title of the article was 《Reversible [4 + 2] Photooxygenation in Anion-Coordination-Driven-Assembled A2L2-Type Complexes》.Category: bromides-buliding-blocks The author mentioned the following in the article:
Two bis-bis(urea) ligands (L1 and L2) incorporating the photoactive 9,10-diphenylanthracene fragment were designed for the construction of anion-coordination-driven assemblies and subsequent oxygenation of anthracene moieties for singlet oxygen storage. The corresponding A2L2-type sulfate complexes [TEA]4[(SO4)2(L1)2] (1) and [TEA]4[(SO4)2(L2)2] (2), where TEA = tetraethylammonium, were achieved by coordinating the ligands L1 or L2 with sulfate anions. Both 1 and 2 were able to undergo [4 + 2] photooxygenation to form endoperoxide photoproducts and , which can be partially converted back to the original anthracene compounds after heating. The structures of 1-EPO and 2-EPO were unambiguously confirmed by x-ray crystallog., NMR and UV-vis spectroscopy, and high-resolution electrospray ionization mass spectrometry. The results came from multiple reactions, including the reaction of 9,10-Dibromoanthracene(cas: 523-27-3Category: bromides-buliding-blocks)
9,10-Dibromoanthracene(cas: 523-27-3) is synthesized by the bromination of anthracene. The bromination reaction is carried out at room temperature using carbon tetrachloride as a solvent. Using 80-85% anthracene as raw material, adding bromine to react for half an hour, the yield is 83-88%.Category: bromides-buliding-blocks
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary