9,10-ジブロモアントラセン 化学特性,用途語,生産方法
外観
淡黄色～黄褐色の結晶又は結晶性粉末
溶解性
熱ベンゼン、熱トルエンにある程度可溶 : エタノール、エーテルに難溶。
用途
有機合成原料。
説明
9,10-Dibromoanthracene is an organic chemical compound containing anthracene with two bromine atoms substituted on its central ring. As a symmetrically brominated anthracene derivative, it is bearing functional groups to extend its conjugation further mainly via C-C bond forming i.e. Stille and Suzuki coupling reactions. It is notable in that it was the first single molecule to have a chemical reaction observed by an atomic force microscope and scanning tunneling microscopy. It is a low-molecular-weight organic semiconductor. It can used as an initiator in visible-spectrum solar-light-mediated benzylic C–H oxygenation through solar light or the blue LED activate[1-2].
化学的特性
Yellow to yellow-green fluffy powder. Melting point 226°C. It can be sublimated and oxidized to generate anthraquinone. It is soluble in hot benzene and hot toluene, but only slightly soluble in alcohol, ether, and cold benzene. It is insoluble in water.
使用
9,10-Dibromoanthracene is a dibrominated polycyclic aromatic hydrocarbon (PAH). 9,10-Dibromoanthracene is often used as an energy acceptor and activator in reactions that produce chemiluminescence.
製造方法
9,10-Dibromoanthracene 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%.
純化方法
Recrystallise it from toluene, xylene or CCl4 (yellow needles), and sublime it in a vacuum [Johnston et al. J Am Chem Soc 109 1291 1987]. [Heilbron & Heaton Org Synth Coll Vol I 207 1941, Beilstein 5 H 665.]
参考文献
[1] Santra S, et al. Visible-Spectrum Solar-Light-Mediated Benzylic C–H Oxygenation Using 9,10-Dibromoanthracene As an Initiator. The Journal of Organic Chemistry, 2020; 86: 1164–1171.
[2] Watanabe M. Formation of aligned needle-like crystals of 9,10-dibromoanthracene in small droplets. Journal of Applied Polymer Science, 2023; 140: e54515.
9,10-ジブロモアントラセン 上流と下流の製品情報
原材料
準備製品