3096-49-9Relevant academic research and scientific papers
Synthesis of highly substituted fluorenones via metal-free TBHP-promoted oxidative cyclization of 2-(aminomethyl)biphenyls. Application to the total synthesis of nobilone
Bracher, Franz,Jourjine, Ilya A. P.,Krau?, Jürgen,Zeisel, Lukas
supporting information, p. 2668 - 2679 (2021/11/30)
Highly substituted fluorenones are readily prepared in mostly fair to good yields via metal- and additive-free TBHP-promoted cross-dehydrogenative coupling (CDC) of readily accessible N-methyl-2-(aminomethyl)biphenyls and 2-(aminomethyl)biphenyls. This methodology is compatible with numerous functional groups (methoxy, cyano, nitro, chloro, and SEM and TBS-protective groups for phenols) and was further utilized in the first total synthesis of the natural product nobilone.
Pd-Catalyzed Assembly of Fluoren-9-ones by Merging of C-H Activation and Difluorocarbene Transfer
Liu, Xiaobing,Sheng, Heyun,Zhou, Yao,Song, Qiuling
supporting information, p. 2543 - 2547 (2021/05/05)
We disclose a novel Pd-catalyzed assembly of fluoren-9-ones by merging of C-H activation and difluorocarbene transfer. ClCF2COONa served as a difluorocarbene precursor to be harnessed as a carbonyl source in this transformation. The current protocol enables us to afford fluoren-9-ones in high yields with excellent functional group compatibility, which also represents the first example of using difluorocarbene as a coupling partner in transition-metal-catalyzed C-H activation.
Spiroacridine-based compound, hole transport material containing said compound, and organic electronic device containing said compound in hole transport layer
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Paragraph 0127-0129, (2021/01/15)
The present invention addresses the problem of providing: a compound that can be used as a hole transport material having excellent hole injection or transport performance, electron blocking performance, light stability, electrical stability, and thermal stability; and a hole transport material containing the compound. Also provided is an organic electronic device including an organic EL device oran organic photoelectric conversion device having a hole transport layer containing the compound, and particularly provided is an organic electronic device including an organic EL device having a long lifetime and high luminous efficiency. The technical solution is to provide a compound represented by general formulae (1-1)-(1-3) (wherein n, L, R, and Ar1-Ar5 are as defined in the description) isprovided.
Method for synthesizing fluorenone ketone compound through molecular oxygen oxidation in water phase
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Paragraph 0058-0061, (2019/08/20)
Aiming at the technical problems that in the prior art a method for synthesizing a fluorenone ketone compound has organic solvent pollution and byproducts can be generated, the invention provides a method for synthesizing a fluorenone ketone compound through molecular oxygen oxidation in a water phase. The method comprises the following steps: by taking a fluorenone compound as a substrate, dispersing into an alkali solution, and at 40-120 DEG C, in the presence of oxygen, and with a water-soluble transition metal compound as a catalyst, stirring to carry out reactions, thereby obtaining the fluorenone ketone compound. By adopting the method, molecular oxygen is adopted as an oxidant, and water is adopted as a solvent, so that an organic solvent is avoided, and the problem that multiple byproducts are generated because of peroxidation can be avoided.
Amphiphilic ligands for Cu-catalyzed aerobic oxidation to synthesize 9-fluorenones in water
Li, Longjia,Liu, Zibo,Tang, Shanyu,Li, Jiao,Ren, Xuanhe,Yang, Guanyu,Li, Heng,Yuan, Bingxin
, p. 34 - 38 (2019/05/10)
A series of amphiphilic PEG-functionalized nitrogen ligands were developed for the highly efficient copper-catalyzed aerobic oxidation of 9-fluorenes, with molecular oxygen as the sole oxidant in neat water. A broad range of functional groups are well tolerated and thus offer the opportunity for further functionalization.
Palladium supported SBA-functionalizd 1,2-dicarboxylic acid: The first Pd-based heterogeneous synthesis of fluorenones
Mohammadkhanni, Abolfazl,Bazgir, Ayoob
, p. 28 - 36 (2018/02/13)
The first Pd-based heterogeneous homo- and cross-coupling reactions for the fluorenones synthesis are reported. The palladium supported SBA-functionalizd 1,2-dicarboxylic acid (Pd@DCA-SBA) was prepared and characterized by the FT-IR, TGA, AAS, TEM, and EDS measurements. The prepared catalyst exhibited a high performance in some homo and cross coupling reactions for the synthesis of fluorenone derivatives using 2-bromo or 2,7-dibromo fluorenone in ethanol-water as green solvent medium.
Condensed cyclic compound and organic light-emitting device comprising the same
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Paragraph 0573; 0575; 0576; 0585; 0590; 0591, (2018/05/03)
Disclosed are a condensed cyclic compound displayed as chemical formula 1, and an organic light emitting device having the same. The organic light emitting device including the condensed cyclic compound has high brightness, high efficiency, and excellent durability.COPYRIGHT KIPO 2018
Spirofluorenexanthenyl derivatives and organic electroluminescent device including the same
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Paragraph 0070; 0071; 0072; 0073, (2018/07/30)
The present invention provides an organic compound represented by the following chemical formula a. In the above formula, R1 to R3, L, x, Ar1 and Ar2 are as defined in claims of the invention.
Chromium-Catalyzed, Regioselective Cross-Coupling of C-O Bonds by Using Organic Bromides as Reactants
Tang, Jinghua,Luo, Meiming,Zeng, Xiaoming
, p. 2577 - 2580 (2017/09/28)
We report a chromium-catalyzed cross-coupling of C-O bonds with widely accessible organic bromides as reactants for the preparation of ortho -arylated or -alkylated aromatic aldehydes at room temperature. The use of metallic magnesium is essential for the reaction to occur, giving it an advantage over previous reactions involving Grignard reagents that have to be prepared separately from organic halides before the coupling.
MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES
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Page/Page column 96, (2017/07/14)
The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which comprise these compounds.
