29574-57-0Relevant articles and documents
Green to highly transmissive switching multicolored electrochromes: Ferrocene pendant group effect on electrochromic properties
?zdemir, Serife,Balan, Abidin,Baran, Derya,Doan, ?zdemir,Toppare, Levent
, p. 168 - 174 (2011)
Two new quinoxaline and ethylenedioxythiophene (EDOT) based polymers; poly(5,8-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2-(phenyll) -3-ferrocenylquinoxaline) (P1) and poly(5,8-bis(2,3-dihydrothieno[3,4-b][1,4] dioxin-5-yl)-2,3-di(naphthalen-2-yl) qui
Synthesis and evaluation of naphthoic acid derivatives as fluorescent probes to screen advanced glycation end-products breakers
Séro, Luc,Calard, Fran?ois,Sanguinet, Lionel,Levillain, Eric,Richomme, Pascal,Séraphin, Denis,Derbré, Séverine
, p. 6716 - 6720 (2012)
Advanced glycation end-products, namely AGEs, are involved in the pathogenesis of numerous diseases. If AGEs inhibitors are well-known, only few products are described as compounds able to destroy those deleterious products. In this work, we describe naphthoic acid derivatives, particularly 1-(naphthalen-1-yl)propane-1,2-dione 9, allowing the simple and rapid detection of AGEs breakers using a 96-well microplate fluorescence assay. Since the inaugurate publication about AGEs breakers whose activity was demonstrated using HPLC analysis, this work proposes the first assay suitable for automated and high throughput screening of AGEs breakers.
Solvent-Free Condensation Reactions to Synthesize Five-Membered Heterocycles Containing the Sulfamide Fragment
Arroyo, Nelson Rodríguez,Rozas, María F.,Vázquez, Patricia,Romanelli, Gustavo P.,Mirífico, María V.
, p. 1344 - 1352 (2016)
We report a study of the solvent-free condensation reaction of 1,2-dicarbonyl compounds with sulfamide catalyzed by a Keggin-type acid (H3PMo12O40·nH2O, MPA) to obtain 3,4-disubstituted 1,2,5-thiadiazole 1,1-dioxide derivatives. Some reactions were also performed in solution or using nano-sized silica-supported MPA catalyst in order to compare the results under different experimental conditions. Effects of the temperature used for the thermal pretreatment of the catalyst, the reaction temperature, the molar ratios sulfamide/1,2-dicarbonyl compound and MPA/1,2-dicarbonyl compound, and alternative experimental procedures on the yield of the reaction product were investigated. Under suitable experimental conditions eight compounds were obtained in good yields. The catalyst was recycled and reused, but with some loss of its catalytic activity. The presented synthetic method is a simple, clean, and environmentally friendly alternative for synthesizing different 1,2,5-thiadiazole 1,1-dioxide derivatives.
Twisted Polycyclic Arenes from Tetranaphthyldiphenylbenzenes by Controlling the Scholl Reaction with Substituents
Yang, Yong,Yuan, Luyan,Shan, Bowen,Liu, Zhifeng,Miao, Qian
, p. 18620 - 18627 (2016)
Herein, we report two new types of twisted polycyclic arenes (2 a, b and 3 a, b) with constitutionally isomeric π-backbones, which are synthesized by controlling the Scholl reaction of 1,2,4,5-tetra(naphth-2-yl)-3,6-diphenylbenzene (1) with properly positioned electron-donating substituents. With a polycyclic backbone containing two [5]helicene and four [4]helicene moieties, 2 a and b are new members of multiple helicenes with interesting stereochemistries. The as-synthesized 2 a and b are the twisted isomers, and thermal isomerization of twisted-2 b results in anti-2 b, a more stable stereoisomer. Both twisted- and anti-2 b have been fully characterized, and the thermal isomerization of twisted-2 b has been studied with1H NMR spectroscopy and DFT calculations. Compounds 3 a and b are new members of twistacenes, the benzannulated pentacene backbone of which exhibits an end-to-end twist as found from the crystal structure. Twisted- and anti-2 b are also found to function as p-type semiconductors in solution-processed thin film transistors, whereas the thin films of 3 b appear insulating presumably due to the lack of π–π interactions.
Organic Compound, Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, and Lighting Device
-
, (2022/02/27)
An organometallic complex having an emission peak in a long wavelength region (a visible region having a wavelength of 700 nm or greater or a near-infrared region) is provided. The organometallic complex has a structure represented by General Formula (G1), in which a ligand having a quinoxaline skeleton is coordinated to a central metal, and an electron-withdrawing group (e.g., fluorine, a cyano group, a trifluoromethyl group, a trifluoromethylsulfonyl group, or a pentafluorosulfanyl group) is included as a substituent at at least one substitutable position of the benzene ring of the quinoxaline skeleton of the ligand.
Oxidation of: O -dioxime by (diacetoxyiodo)benzene: Green and mild access to furoxans
He, Chunlin,Pang, Siping,Zhang, Qi,Zhang, Xun,Zhao, Cheng
supporting information, p. 1489 - 1493 (2022/01/31)
Furoxan has been widely used in the field of high energy density materials because of its excellent properties such as high density, high standard enthalpy of formation and high nitrogen content. However, its existing synthesis methods are still restricted by the problems of difficult substrate preparation and manual handling of hazardous reagents. Herein, we disclosed a mild oxidation strategy to efficiently obtain furoxan derivatives starting from readily available o-dioxime substrates. This reaction features high functional group tolerance and easy scale-up, and has excellent regioselectivity for specific nonsymmetric o-dioximes. This method greatly reduces the safety risk and simplifies the operation process, and means that diversified furoxan derivatives can be easily accessed, thus paving the way for the wide application of furoxan derivatives. This journal is
Visible-light-mediated deuteration of aldehydes with D2O via polarity-matched reversible hydrogen atom transfer
Dong, Jian-Yang,Xu, Wen-Tao,Yue, Fu-Yang,Song, Hong-Jian,Liu, Yu-Xiu,Wang, Qing-Min
supporting information, (2021/01/26)
Hydrogen/deuterium exchange at the formyl groups of aldehydes is the most direct way to synthesize deuterated aldehydes, which are of interest for labeling studies and drug discovery. Herein, we report a mild, general protocol for visible-light-mediated m
Synthesis and optical properties of polyarylimidazole derivatives containing naphthyl groups in the 4,5-positions for coated and non-doped OLED materials
Mizuki, Keiji,Sakai, Daiki,Hatashima, Yuri,Hatta, Taizo
, p. 813 - 821 (2019/08/01)
– In this study, we describe the development of an imidazole emitting material, characterized by low concentration quenching via a bulky substituent group, for coated and non-doped OLEDs. Specifically, we synthesized novel 1,2,4,5-tetraarylimidazoles that
Magnetic magnetite nanoparticals catalyzed selective oxidation of Α-hydroxy ketones with air and one-pot synthesis of benzilic acid and phenytoin derivatives
Li, Xiaona,Xia, Dandan,Wen, Zhiyong,Gong, Bowen,Sun, Maolin,Wu, Yue,Zhang, Jie,Sun, Jun,Wu, Yang,Bao, Kai,Zhang, Weige
, p. 63 - 69 (2018/06/26)
A clean and efficient protocol for selective oxidation of α-hydroxy ketones using magnetic magnetite nanoparticals (Fe3O4·MNPs) as catalyst with air as green oxidant has been developed. Application of Fe3O4·MNPs was also proved to be successful in one-pot synthesis of benzilic acid and phenytoin derivatives. The facile one-pot procedure enhanced the production efficiency, shortened the reaction time and minimized the chemical waste. Notably, the catalyst can be reused at least for five times without any appreciable loss of its activity.
Copper-catalyzed aerobic oxidative C-C bond cleavage of 1,3-diaryldiketones to synthesize 1,2-diketones
Zhang, Chun,Wang, Xiaoyang,Jiao, Ning
supporting information, p. 1458 - 1460 (2014/06/23)
An aerobic oxidative C-C bond cleavage of 1,3-diaryldiketones for the synthesis of 1,2-diketones by using O2 as the oxidant has been developed. Control experiments illustrate that the copper catalyst not only assist the aerobic oxidative process of 1,3-diketones, but also catalyze the 1,2-Wagner-Meerwein-type rearrangement process. Georg Thieme Verlag Stuttgart. New York.
