6945-76-2Relevant articles and documents
Anthrathiadiazole Derivatives: Synthesis, Physical Properties and Two-photon Absorption
Fan, Mingxuan,Chen, Guangsheng,Xiang, Yu,Li, Junbo,Yu, Xianglin,Zhang, Wenying,Long, Xueting,Xu, Liang,Wu, Jinjun,Xu, Ze,Zhang, Qichun
, p. 10898 - 10902 (2021/06/28)
Anthrathiadiazole is a key synthon for the construction of large azaacenes, however, the attachment of different substituents onto the skeleton of anthrathiadiazole is difficult but highly desirable because it could be easy to enrich the structures of aza
Chiral tetrahydrofuran oxazine fused benzimidazole-4, 7-diketone derivative as well as preparation method and application thereof
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Paragraph 0039-0040, (2020/11/23)
The invention discloses a chiral tetrahydrofuran oxazine fused benzimidazole-4, 7-diketone derivative and a preparation method and application thereof, and belongs to the field of sugar chemistry andmedicinal chemistry. The chiral tetrahydrofuran oxazine
Identification of ortho-naphthoquinones as anti-AML agents by highly efficient oxidation of phenols
Huang, Huidan,Yan, Ming,Chen, Jianqiu,Yuan, Biao,Chen, Guitang,Cheng, Shujie,Huang, Dechun,Gao, Zhen,Cao, Chongjiang
, p. 97 - 102 (2019/01/28)
A straightforward method for synthesizing ortho-naphthoquinones was identified using an easily available cobalt–Schiff base complex. Efficient oxidation of phenols to ortho-naphthoquinones was useful in obtaining compounds with potent biological activity
Incorporating Morpholine and Oxetane into Benzimidazolequinone Antitumor Agents: The Discovery of 1,4,6,9-Tetramethoxyphenazine from Hydrogen Peroxide and Hydroiodic Acid-Mediated Oxidative Cyclizations
Conboy, Darren,Mirallai, Styliana I.,Craig, Austin,McArdle, Patrick,Al-Kinani, Ali A.,Barton, Stephen,Aldabbagh, Fawaz
, p. 9811 - 9818 (2019/08/20)
The reactivity of hydrogen peroxide and catalytic hydroiodic acid toward 3,6-dimethoxy-2-(cycloamino)anilines is tunable to give ring-fused benzimidazoles or 1,4,6,9-tetramethoxyphenazine in high yield. Mechanisms via a detected nitroso-intermediate are p
Light-actuated resorcin[4]arene cavitands
García-López, Víctor,Mili?, Jovana V.,Zalibera, Michal,Neshchadin, Dmytro,Kuss-Petermann, Martin,Ruhlmann, Laurent,Nomrowski, Julia,Trapp, Nils,Boudon, Corinne,Gescheidt, Georg,Wenger, Oliver S.,Diederich, Fran?ois
supporting information, p. 5615 - 5626 (2018/08/24)
A light-actuated resorcin[4]arene cavitand equipped with two quinone (Q) and two opposite Ru(II)-based photosensitizing walls was synthesized and investigated. The cavitand is capable of switching from an open to a contracted conformation upon reduction of the two Q to the corresponding SQ radical anions by intramolecular photoinduced electron transfer in the presence of a sacrificial donor. The molecular switch was investigated by cyclic and rotating disc voltammetry, UV–Vis–NIR spectroelectrochemistry, transient absorption, NMR, and EPR spectroscopy. This study provides the basis for the development of future light-activated switches and molecular actuating nanodevices.
Multispectroscopic and theoretical studies on rapid, selective and sensitive visual sensing of cyanide ion in aqueous solution by receptors possessing varying HBD property
Raja Lakshmi,Manivannan,Jayasudha,Elango, Kuppanagounder P.
, p. 2807 - 2821 (2018/01/27)
Three new benzoquinone–imidazole ensembles possessing varying number (0, 1 and 2) of electron-withdrawing bromo substituents on the quinone ring have been designed, synthesized, characterized and employed as receptors in cyanide sensing. These receptors c
A pyridyl-benzimidazole based molecular luminescent turnstile
Godde, Bérangère,Ritaine, Dialia,Jouaiti, Abdelaziz,Mauro, Matteo,Hosseini, Mir Wais
, p. 7810 - 7815 (2018/05/24)
A molecular turnstile T1 based on a luminescent pyridyl-benzimidazole stator and a rotor containing a pyridyl coordinating site is designed and its multi-step synthesis is described. The turnstile T1 undergoes free rotation of the rotor around the stator.
Method for nitrating aromatic compound by using nitrate under the action of auxiliary agent
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Paragraph 0075; 0076, (2018/09/11)
The invention discloses a method for nitrating an aromatic compound by using a nitrate under the action of an auxiliary agent, and provides an aromatic nitro compound preparation method, which comprises: in the presence of an external action and an auxiliary agent, carrying out a nitrating reaction on an aromatic compound and a metal nitrate or a hydrate thereof to obtain the aromatic nitro compound, wherein the external action can cause the physical and/or chemical property change of a substance, the auxiliary agent is a substance having water absorbing ability, the external action can be mechanical force or heating, and the mechanical force can be any one selected from compression, shearing, impacting, friction, stretching, bending and vibration. According to the present invention, the method does not require any solvents so as to avoid the generation of the waste liquid; the acidic substance is not used, such that the treatment is simple after the reaction is completed, and the equipment is not damaged; the added auxiliary agent can be theoretically recycled; and the method has extremely high conversion rate and extremely high selectivity, and can be used for the nitration of conventional aromatic compounds.
Greener synthesis using hydrogen peroxide in ethyl acetate of alicyclic ring-fused benzimidazoles and anti-tumour benzimidazolequinones
Aldabbagh, Fawaz,Gurry, Michael,Keane, Lee-Ann J.,Sweeney, Martin
supporting information, p. 3565 - 3567 (2017/10/06)
Environmentally-friendly and cost effective hydrogen peroxide in ethyl acetate was used to prepare in high yields pyrrolo[1,2-a]benzimidazoles from commercial o-(pyrrolidin-1-yl)anilines without the requirement for organic-aqueous extraction and chromatography. Six, seven and eight membered ring-fused analogues were similarly obtained in high yields with methanesulfonic acid required for the pyrido[1,2-a]benzimidazole. Anti-tumour benzimidazolequinone derivatives were obtained in high yield via the cyclization of 3,6-dimethoxy-2-(cycloamino)anilines.
Exploration of the Photodegradation of Naphtho[2,3-g] quinoxalines and Pyrazino[2,3-b]phenazines
Kolmer-Anderl, Nicole,Kolmer, Andreas,Thiele, Christina M.,Rehahn, Matthias
supporting information, p. 5277 - 5287 (2016/04/09)
Nitrogen-containing polycyclic aromatic hydrocarbons are very attractive compounds for organic electronics applications. Their low-lying LUMO energies points towards a potential use as n-type semiconductors. Furthermore, they are expected to be more stable under ambient conditions, which is very important for the formation of semiconducting films, where materials with high purity are needed. In this study, the syntheses of naphtho[2,3-g]quinoxalines and pyrazino[2,3-b]phenazines is presented by using reaction conditions, that provide the desired products in high yields, high purity and without time-consuming purification steps. The HOMO and LUMO energies of the compounds are investigated by cyclic voltammetry and UV/Vis spectroscopy and their dependency on the nitrogen content and the terminal substituents are examined. The photostability and the degradation pathways of the naphtho[2,3-g]quinoxalines and pyrazino[2,3-b]phenazines are explored by NMR spectroscopy of irradiated samples affirming the large influence of the nitrogen atoms in the acene core on the degradation process during the irradiation. Finally, by identifying the degradations products of 2,3-dimethylnaphtho[2,3-g]quinoxaline it is possible to track down the most reactive position in the compound and, by blocking this position with nitrogen, to strongly increase the photostability.
