- BN-Embedded Polycyclic Aromatic Hydrocarbon Oligomers: Synthesis, Aromaticity, and Reactivity
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BN-embedded oligomers with different pairs of BN units were synthesized by electrophilic borylation. Up to four pairs of BN units were incorporated in the large polycyclic aromatic hydrocarbons (PAHs). Their geometric, photophysical, electrochemical, and
- Chen, Weinan,Chen, Yijing,Lu, Xuefeng,Qiao, Yanjun,Zhou, Gang
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- Double CH Activation of a Masked Cationic Bismuth Amide
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The transformation of C?H bonds into more reactive C?M bonds amenable to further functionalization is of fundamental importance in synthetic chemistry. We demonstrate here that the transformation of neutral bismuth compounds into their cationic analogues can be used as a strategy to facilitate CH activation reactions. In particular, the double CH activation of bismuth-bound diphenyl amide, (NPh2)?, is reported along with simple one-pot procedures for the functionalization of the activated positions. The organometallic products of the first and second CH activation steps were isolated in high yields. Analysis by NMR spectroscopy, single-crystal X-ray diffraction, and DFT calculations revealed unusual ground-state properties (e.g., ring strain, moderate heteroaromaticity), and provided mechanistic insight into the formation of these compounds.
- Ritschel, Benedikt,Poater, Jordi,Dengel, Hannah,Bickelhaupt, F. Matthias,Lichtenberg, Crispin
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- Preparation method of 10,10 - diphenyl silicon heteroacridine
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The invention discloses a preparation method of 10,10 - diphenylsilicon heteroacridine, and belongs to the field of fine chemical engineering. The technical problem to be solved by the invention is that the implementation cost is low. The method has the a
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Paragraph 0029; 0041-0043; 0110-0111
(2021/11/06)
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- Tellurium(II)/Tellurium(III)-Catalyzed Cross-Dehydrogenative C?N Bond Formation
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The TeII/TeIII-catalyzed dehydrogenative C?H phenothiazination of challenging phenols featuring electron-withdrawing substituents under mild aerobic conditions and with high yields is described. These unexpected TeII/Tesu
- Cremer, Christopher,Goswami, Monalisa,Rank, Christian K.,de Bruin, Bas,Patureau, Frederic W.
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supporting information
p. 6451 - 6456
(2021/02/12)
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- ORGANIC ELECTROLUMINESCENCE DEVICE AND FUSED POLYCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
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An organic electroluminescence device of an embodiment includes oppositely disposed first electrode and second electrode, and a plurality of organic layers disposed between the first electrode and the second electrode, wherein at least one from among the organic layers includes a fused polycyclic compound represented by Formula 1 below, thereby showing improved emission efficiency.
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Paragraph 0121-0122
(2020/12/13)
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- Compound, display panel and display device
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The present invention provides a compound used as a main material, and a display panel and a display device comprising the same, the compound having an azaspiro silicon ring structure represented by chemical formula 1, wherein A1 and A2 are electron accep
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Paragraph 0051-0054
(2020/01/11)
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- Synthesis of Di(hetero)arylamines from Nitrosoarenes and Boronic Acids: A General, Mild, and Transition-Metal-Free Coupling
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The synthesis of di(hetero)arylamines by a transition-metal-free cross-coupling between nitrosoarenes and boronic acids is reported. The procedure is experimentally simple, fast, mild, and scalable and has a wide functional group tolerance, including carbonyls, nitro, halogens, free OH and NH groups. It also permits the synthesis of sterically hindered compounds.
- Roscales, Silvia,Csák?, Aurelio G.
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p. 1667 - 1671
(2018/03/23)
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- Method for simply and efficiently synthesizing boron-nitrogen heteroaromatic hydrocarbons
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The invention provides a method for simply and efficiently synthesizing a class of boron-nitrogen heteroaromatic hydrocarbons, wherein the general formula of the finally synthesized compound is defined in the specification, Ar1 and Ar2 are respectively in
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Paragraph 0050; 0051; 0052; 0060
(2019/01/06)
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- SYNTHESIS OF SUBSTITUTED ACRIDINES
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Disclosed is a method of making substituted acridines. The method includes the step of reacting a bis(halophenyl) amine with an alkyne for a time and at a temperature to yield a substituted acridine.
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Page/Page column 18-19
(2018/12/13)
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- HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
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A heterocyclic compound and an organic light-emitting device including the same are provided. The heterocyclic compound may be represented by Formula 1. The substituents and variables of Formula 1 may be as defined in the present disclosure. The organic light-emitting device including the heterocyclic compound represented by Formula 1 may have a low driving voltage, high current density, and high efficiency.
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Paragraph 0380-0382
(2018/09/12)
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- Silicon-fluorene derivative for electrogenerated blue-light emitting materials
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The invention provides a silicon-fluorene derivative for electrogenerated blue-light emitting materials. The silicon-fluorene derivative has a structure shown as general formula (I) in the specification, wherein R1-R7 are independently selected from H, C1
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Paragraph 0032; 0033
(2018/04/02)
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- CARBAZOLE-BASED COMPOUND AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME
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Provided are a carbazole-based compound and an organic light-emitting device including the same. The carbazole-based compound may have the following general structure: wherein details and examples of L1 through L6, R1 thro
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Paragraph 0375-0376; 0382-0383
(2017/09/02)
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- Pd-Catalyzed Autotandem Reactions with N-Tosylhydrazones. Synthesis of Condensed Carbo- and Heterocycles by Formation of a C-C Single Bond and a C-C Double Bond on the Same Carbon Atom
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A new Pd-catalyzed autotandem reaction is introduced that consists of the cross-coupling of a benzyl bromide with a N-tosylhydrazone followed by an intramolecular Heck reaction with an aryl bromide. During the process, a single and a double C-C bond are formed on the same carbon atom. Two different arrangements for the reactive functional groups are possible, rendering great flexibility to the transformation. The same strategy led to 9-methylene-9H-fluorenes, 9-methylene-9H-xanthenes, 9-methylene-9,10-dihydroacridines, and also dihydropyrroloisoquinoline and dihydroindoloisoquinoline derivatives.
- Paraja, Miguel,Valdés, Carlos
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supporting information
p. 2034 - 2037
(2017/04/27)
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- 1-bromo carbazole preparation method
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The invention discloses a 1-bromo carbazole preparation method, and belongs to the field of organic chemical synthesis. The preparation method specifically comprises: carrying out an Ullmann coupling reaction on raw materials such as o-bromoaniline and o-
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Paragraph 0054-0056; 0060-0062; 0065-00067; 0070-0072
(2017/11/29)
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- ORGANIC LIGHT-EMITTING COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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The present invention relates to a novel organic compound represented by chemical formula 1, wherein the compound has excellent light-emitting performance and to an organic electroluminescent device which has improved light-emitting efficiency, driving vo
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Paragraph 0070; 0071; 0072
(2016/10/10)
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- Novel organic semiconductor compound and organic light emitting device using the same
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The present invention relates to a novel organic semiconductor compound, and an organic electroluminescent device using the same. More particularly, the organic semiconductor compound according to the present invention is an azasiline derivative with a rigid structure having an electron doner and an electron acceptor in the molecule, and can embody excellent oxidation stability and light emitting characteristics. The organic electroluminescent device using the same has a high purity blue color having high quantum efficiency. The organic semiconductor compound is represented by chemical formula 1.
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Paragraph 0135-0139
(2016/10/10)
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- Thermally Activated Delayed Fluorescence from Azasiline Based Intramolecular Charge-Transfer Emitter (DTPDDA) and a Highly Efficient Blue Light Emitting Diode
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For electroluminescence with delayed fluorescence, the azasiline unit has been introduced for the first time as a donor in a thermally activated delayed fluorescence (TADF) material. The TADF material (DTPDDA) shows strong intramolecular charge transfer (CT) character with large spatial separation with the acceptor of triazine leading to narrow splitting of singlet and triplet excited states for the efficient reverse intersystem crossing (RISC). A blue organic light emitting diode (OLED) based on DTPDDA not only displays deep blue in the Commission Internationale de L'Eclairage (CIE) coordinates of (0.149, 0.197) but also exhibits a high external quantum efficiency (EQE) of 22.3% which is the highest value ever reported for a blue fluorescent OLED. Theoretical prediction based on transient photoluminescence (PL) and optical simulation result agrees well with the achieved EQE indicating the successful conversion of triplet excitons to singlet in the blue fluorescent OLED by using DTPDDA.
- Sun, Jin Won,Baek, Jang Yeol,Kim, Kwon-Hyeon,Moon, Chang-Ki,Lee, Jeong-Hwan,Kwon, Soon-Ki,Kim, Yun-Hi,Kim, Jang-Joo
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p. 6675 - 6681
(2015/10/28)
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- ORGANIC ELECTROLUMINESCENCE ELEMENT AND MATERIAL FOR ORGANIC ELECTROLUMINESCENCE ELEMENT
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Provided are a novel organic electroluminescent device material and an organic electroluminescent device using the same. The organic electroluminescent device material includes a compound represented by the following formula (1). The organic electrolumine
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Paragraph 0122-0125
(2017/04/12)
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- Monobenzofused 1,4-azaborines: Synthesis, characterization, and discovery of a unique coordination mode
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We report the first general synthesis of boron-substituted monobenzofused 1,4-azaborines using ring-closing metathesis of an enamine-containing diene as a key synthetic strategy. As part of our investigations, we discovered that the B-C3 moiety in a 1,4-a
- Xu, Senmiao,Haeffner, Fredrik,Li, Bo,Zakharov, Lev N.,Liu, Shih-Yuan
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supporting information
p. 6795 - 6799
(2014/07/08)
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- Development of a catalytic electron transfer system mediated by transition metal ate complexes: Applicability and tunability of electron-releasing potential for organic transformations
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We have developed a catalytic electron transfer (ET) system composed of a transition metal ate complex (Me3M(II)Li; M = Co(II), Mn(II), Fe(II)) and magnesium. This system (catalytic Me3M(II)Li/Mg) turned out to be effective for various ET reactions, such as the desulfonylation of N-phenylsulfonyl amides, and others (the chemoselective cleavage of O-allyl groups, the reduction of nitro groups, the partial reduction of diketones, and the reductive coupling of diphenyliodonium salt). The ET ability of this system can be tuned by changing the ligands of the ate complexes. This tunability was experimentally and electrochemically demonstrated: alkoxy-ligated and dianion-type ET ate complexes showed attenuated and enhanced reducing abilities, respectively. The modification of the ET abilities was evaluated by means of electrochemical measurements and chemical reactions. These results provide a basis for the design of various tailor-made ET ate complexes.
- Uchiyama, Masanobu,Matsumoto, Yotaro,Nakamura, Shinji,Ohwada, Tomohiko,Kobayashi, Nagao,Yamashita, Natsuno,Matsumiya, Atsushi,Sakamoto, Takao
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p. 8755 - 8759
(2007/10/03)
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- Novel synthetic strategy of carbolines via palladium-catalyzed amination and arylation reaction
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Four parent carbolines and the corresponding 5- or 9-methylsulfonyl derivatives were synthesized by the palladium-catalyzed intramolecular arylation reaction of ortho-bromo-substituted anilinopyridines which were prepared by the palladium-catalyzed amination reaction of iodobenzenes with aminopyridines. Carbazole and its 9-methylsulfonyl derivative were also synthesized by the same method.
- Iwaki, Takehiko,Yasuhara, Akito,Sakamoto, Takao
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p. 1505 - 1510
(2007/10/03)
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