4269-17-4Relevant articles and documents
Synthesis of Cyclopenta-HBCs and their Regioselective Chlorination During Oxidative Cyclodehydrogenation
Hall, Thomas B. J.,Hoggard, Bryce R.,Larsen, Christopher B.,Lucas, Nigel T.
, p. 1106 - 1110 (2019)
Hexa-peri-hexabenzocoronenes with a bay-fused five-membered ring are synthesized from fluorenyl precursors. The key oxidative cyclodehydrogenation step is accompanied by regioselective chlorination that is enhanced by methylation at the cyclopenta-ring or increased reaction concentration. The CpHBC products undergo mild electrophilic aromatic bromination, without catalyst, to afford adducts suitable for π-extension by cross-coupling.
Intermediate 5 - bromine yinyin alkone preparation method (by machine translation)
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Paragraph 0008; 0010-0029, (2019/04/17)
The invention discloses an intermediate 5 - bromine yinyin alkone synthetic method, bromobenzene, dichloromethane, 3 - [...], concentrated hydrochloric acid, NaOH, 1 - tert-butyl 3 - methyl imidazole pressure concentrated water, double-(trifluoromethyl sulfonyl) imide as a main raw material, the process of the invention using the composite catalyst to avoid the corrosion of the equipment, the reaction conditions are easy to control, the yield is high, the product is easy to purification, and the reaction of the raw material 3 - chloropropionyl cheap and bromobenzene. To sum up, the preparation process have very good economic benefits can be the large-scale production. (by machine translation)
A containing 9, 9' - fluorene and dibenzofuran aromatic amine compound and its organic electroluminescent device (by machine translation)
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Paragraph 0060; 0064; 0065, (2018/11/04)
The present invention provides a containing 9, 9' - fluorene and dibenzofuran aromatic amine compound and its organic electroluminescent light emitting device, relates to organic photoelectric material technical field. The compound preparation method is simple, easily available raw materials, has suitable the highest occupied molecular orbital energy level, high T1 value and high refractive index, and have very good hole transporting capability, thermal stability and film-forming properties, is applied to the OLED devices, can significantly improve the luminous efficiency of the device, heat resistance and service life, also can effectively reduce the driving voltage of the device. (by machine translation)