57743-36-9Relevant academic research and scientific papers
C?H Direct Arylated 6H-Indolo[2,3-b]quinoxaline Derivative as a Thickness-Dependent Hole-Injection Layer
Dong, Dai,Fang, Da,Li, Hairong,Zhu, Caixia,Zhao, Xianghua,Li, Jiewei,Jin, Lingzhi,Xie, Linghai,Chen, Lin,Zhao, Jianfeng,Zhang, Hongmei,Huang, Wei
, p. 920 - 926 (2017)
A novel perfluoro-1,4-phenylenyl 6H-indolo[2,3-b]quinoxaline derivative (TFBIQ) was designed and synthesized by using a C?H direct arylation method. The optoelectrical properties of the obtained TFBIQ were fully characterized by UV/Vis spectroscopy, photoluminescence spectroscopy, cyclic voltammetry, and a group of Alq3-based green organic light-emitting diodes (OLEDs). Device A, which used 0.5 nm-thick TFBIQ as the interfacial modification layer, exhibited the five best advantages of device performance including a minimum turn-on voltage as low as 3.1 V, a maximum luminescence intensity as high as 26564 cd m?2, a highest current density value of 348.9 mA cm?2 at a voltage of 11 V, the smallest efficiency roll-off, as well as the greatest power efficiency of 1.46 lm W?1 relative to all of the other tested devices with thicker TFBIQ and also 10 nm-thick MoO3 as hole-injection layers (HILs). As a promising candidate for an organic HIL material, the as-prepared TFBIQ exhibited a strong thickness effect on the performance of corresponding OLEDs. Furthermore, the theoretical calculated vertical ionization potential of the fluorinated TFBIQ suggests better anti-oxidation stability than that of the non-fluorinated structure.
Br?nsted acid hydrotrope combined catalysis in water: a green approach for the synthesis of indoloquinoxalines and bis-tetronic acids
Kumbhar, Arjun,Kanase, Dhanaji,Mohite, Suhas,Salunkhe, Rajshri,Lohar, Trushant
, p. 2263 - 2278 (2021/03/31)
The present work describes the applications of Br?nsted acid hydrotrope combined catalyst (BAHC) as a mild, efficient and reusable catalyst for synthesis of indoloquinoxalines and bis-tetronic acids in water. Using BAHC, we synthesized many indoloquinoxal
Synthesis of New 2-(6H-Indolo[2,3-b]quinoxalin-6-yl)-1-phenylethane-1-ones
Grekhneva, E. V.,Kudryavcev, T. A.,Kudryavtseva, T. N.,Lamanov, A. Y.,Melnichenko, V. E.
, p. 2114 - 2117 (2021/11/13)
Abstract: A series of new 2-(6H-indolo[2,3-b]quinoxalin-6-yl)-1-phenylethan-1-ones was synthesized by the reaction of various 6H-indolo[2,3-b]quinoxalines with 4-substituted 2-bromophenylethan-1-ones in a DMSO–K2CO3 system.
Compound taking 6-phenyl-6H-indolo [2, 3-b] quinoxaline as receptor and application thereof
-
Paragraph 0050-0053, (2020/04/17)
The invention discloses a compound taking 6-phenyl-6H-indolo [2, 3-b] quinoxaline as a receptor, and belongs to the technical field of organic electroluminescent materials. The structural general formula of the compound is shown as a formula (I), wherein R1 is deuterated phenyl or triazine; A is an electron donating group or an electron accepting group. According to the invention, a specific donorgroup or receptor group is introduced to modify 6-phenyl-6H-indolo [2, 3-b] quinoxaline at a specific position to form a brand-new compound; excellent energy transmission capability and charge transmission capability are achieved; the luminescence stability of luminescent devices can be significantly improved, and the compound can be widely applied to OLED luminescent devices and display devicesto be used as a luminescent layer main body material, a hole blocking material, an electron transmission material or a thermal activity delayed fluorescence (TADF) luminescent material. The structuralgeneral formula is shown as formula (I).
An environmentally benign attribute for the expeditious synthesis of quinoxaline and its derivatives
Bhargava, Sangeeta,Soni,Rathore, Deepti
, (2019/08/08)
A simple, efficient, and environmentally friendly ionic liquid mediated protocol for the synthesis of quinoxaline derivatives using carbonyl substrate and phenylenediamines has been described. A range of ionic liquids were synthesized, characterized via IR, 1H and 13C NMR and used as a solvent as well as catalyst for above protocol. The catalytic activities of ILs were evaluated and the relationship between the catalytic activity and acidity was discussed. It was also found that among the all ILs, [Bmim]CF3SO3 was the most effective, eco-friendly and less expensive solvent and catalyst for the above etiquette. This method is of significant value due to the eco-friendly nature of ionic liquid and non usage of separate catalyst to drive the reaction forward. The protocol proves to be efficient and environmentally benign in terms of good to excellent yields, low reaction times, simple work-up, ease of recovery, and reusability of ionic liquid for six times.
β-cyclodextrin mediated synthesis of indole derivatives: reactions of isatins with 2-amino(or 2-thiole)anilines by supramolecular catalysis in water
Shivhare, Km Neha,Siddiqui
, p. 52 - 61 (2018/10/24)
An elegant, mild, and straightforward strategy for the synthesis of indole derivatives have been accomplished by the biomimetic catalysis for the first time in water under neutral conditions. This supramolecular catalyst oriented methodology provides a sustainable and green protocol for the synthesis of 6H-indolo[2,3-b]quinoxalines and 3H-spiro[benzo[d]thiazole-2,3’-indolin]-2’-one by the reaction of isatin derivatives with 1,2-difunctionalized benzene using β-cyclodextrin (β-CD) as a recoverable and reusable supramolecular catalyst.
Microwave-assisted Synthesis of 6-{(5-Aryl-1,3,4-oxadiazol-2-yl)methyl}-6H-indolo[2,3-b]quinoxalines
Avula, Sreenivas,Komsani, Jayaram Reddy,Koppireddi, Satish,Yadla, Rambabu
, p. 1737 - 1742 (2015/11/09)
An efficient and convenient synthesis of a new series of 2-{(6H-indolo[2,3-b]quinoxalin-6-yl)methyl}-5-aryl-1,3,4-oxadiazoles from readily available 1,2-diaminobenzene and isatins under microwave irradiation conditions was disclosed. The 6-{(5-aryl-1,3,4-
Cu doped CdS nanoparticles: A versatile and recoverable catalyst for chemoselective synthesis of indolo[2,3-b]quinoxaline derivatives under microwave irradiation
Dandia, Anshu,Parewa, Vijay,Maheshwari, Shuchi,Rathore, Kuldeep S.
, p. 244 - 252 (2014/08/18)
CdS and Cu doped CdS NPs has been obtained successfully using safe agents through a simple aqueous chemical method and characterized by XRD, TEM, SEM, EDAX, UV/VIS and ICP-AES. These investigations revealed that the particle size of the synthesized materi
Sulfamic acid: A mild, efficient, and cost-effective catalyst for synthesis of indoloquinoxalines at ambient temperature
Hegade, Pravin G.,Mane, Mansing M.,Patil, Jayavant D.,Pore, Dattaprasad M.
supporting information, p. 3384 - 3391 (2014/12/11)
A simple, cost-effective method for synthesis of indoloquinoxalines from isatin and o-phenylenediamine employing a catalytic amount of sulfamic acid at ambient temperature is reported. Moreover, the method is applicable for a variety of isatins, ninhydrin, 4-hydroxynaphthaquinone, and 1,2-diketones. The key features of the protocol include rapid reactions with good yields, simple workup procedure, and easy isolation of products.
