Category: 92-71-7

Recommanded Product: 92-71-7. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Thiocarbamate-directed Cp*Co(III)-Catalyzed Olefinic C-H Amidation: Facile Access to Enamines with High (Z)-Selectivity. Author is Liang, Ya-Ru; Si, Xiao-Ju; Zhang, He; Yang, Dandan; Niu, Jun-Long; Song, Mao-Ping.

A thiocarbamate-directed Cp*Co(III)-catalyzed C-H oxidative amidation of olefins is achieved to synthesize a series of enamines. The key feature of this protocol is the use of earth-abundant cobalt as catalyst and thiocarbamate as directing group, which provides an efficient and simple manner to synthesize enamines in good yields with high (Z)-selectivity. This reaction proceeds smoothly under very mild conditions (rt and air), and a wide range of functionalized alkenes, as well as dioxazolones, were compatible with the standard reaction conditions.

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Reference of 2,5-Diphenyloxazole. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Long-range exciton diffusion in molecular non-fullerene acceptors. Author is Firdaus, Yuliar; Le Corre, Vincent M.; Karuthedath, Safakath; Liu, Wenlan; Markina, Anastasia; Huang, Wentao; Chattopadhyay, Shirsopratim; Nahid, Masrur Morshed; Nugraha, Mohamad I.; Lin, Yuanbao; Seitkhan, Akmaral; Basu, Aniruddha; Zhang, Weimin; McCulloch, Iain; Ade, Harald; Labram, John; Laquai, Frederic; Andrienko, Denis; Koster, L. Jan Anton; Anthopoulos, Thomas D..

The short exciton diffusion length associated with most classical organic semiconductors used in organic photovoltaics (5-20 nm) imposes severe limits on the maximum size of the donor and acceptor domains within the photoactive layer of the cell. Identifying materials that are able to transport excitons over longer distances can help advancing our understanding and lead to solar cells with higher efficiency. Here, we measure the exciton diffusion length in a wide range of nonfullerene acceptor mols. using two different exptl. techniques based on photocurrent and ultrafast spectroscopy measurements. The acceptors exhibit balanced ambipolar charge transport and surprisingly long exciton diffusion lengths in the range of 20 to 47 nm. With the aid of quantum-chem. calculations, we are able to rationalize the exciton dynamics and draw basic chem. design rules, particularly on the importance of the end-group substituent on the crystal packing of nonfullerene acceptors.

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Klitting, Olivia; Sguerra, Fabien; Bertrand, Guillaume H. V.; Villemot, Vincent; Hamel, Matthieu published the article 《Preparation and characterization of cross-linked plastic scintillators》. Keywords: crosslinked plastic scintillator radiation detector.They researched the compound: 2,5-Diphenyloxazole( cas:92-71-7 ).Related Products of 92-71-7. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:92-71-7) here.

Plastic scintillators are efficient and low-cost detectors suitable for radiation detection. Obviously and as for all detectors, plastic scintillators display both advantages and drawbacks. Among disadvantages, it is known that their use is prohibited at elevated temperatures (e.g. 100°C) due to their organic, polymeric nature. Com. providers recommend therefore using plastic scintillators at temperatures below 60°C to mitigate this degradation Herein, the authors present the preparation and the characterization of plastic scintillators based from crosslinked polystyrene derivatives, which allow them stability at high temperatures (i.e., tested up to 110°C) while maintaining their scintillation properties. Their preparation, phys. characterization, and relative scintillation yield estimated by radioluminescence is reported, so as to determine the influence of the crosslinking on these properties. In addition, the materials are bench marked with two com. plastic scintillators from Eljen technol.: all-purpose EJ-200 and cross-linked EJ-244.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2,5-Diphenyloxazole(SMILESS: C1(C2=CC=CC=C2)=NC=C(C3=CC=CC=C3)O1,cas:92-71-7) is researched.Recommanded Product: 56621-48-8. The article 《Synthesis and evaluation of trypanocidal activity of derivatives of naturally occurring 2,5-diphenyloxazoles》 in relation to this compound, is published in Bioorganic & Medicinal Chemistry. Let’s take a look at the latest research on this compound (cas:92-71-7).

African trypanosomiasis is a zoonotic protozoan disease affecting the nervous system. Various natural products reportedly exhibit trypanocidal activity. Naturally occurring 2,5-diphenyloxazoles present in Oxytropis lanata, and their derivatives, were synthesized. The trypanocidal activities of the synthesized compounds were evaluated against Trypanosoma brucei brucei, T. b. gambiense, T. b. rhodesiense, T. congolense, and T. evansi. Natural product 1 exhibited trypanocidal activity against all the species/subspecies of trypanosomes, exhibiting half-maximal inhibitory concentrations (IC50) of 1.1-13.5 μM. Modification of the oxazole core improved the trypanocidal activity. The 1,3,4-oxadiazole (7) and 2,4-diphenyloxazole (9) analogs exhibited potency superior to that of 1. However, these compounds exhibited cytotoxicity in Madin-Darby bovine kidney cells. The O-methylated analog of 1 (12) was non-cytotoxic and exhibited selective trypanocidal activity against T. congolense (IC50 = 0.78 μM). Structure-activity relationship studies of the 2,5-diphenyloxazole analogs revealed aspects of the mol. structure critical for maintaining selective trypanocidal activity against T. congolense.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Comparison of lignans and phenolic acids in different varieties of germinated flaxseed (Linum usitatissimum L.), the main research direction is Linum lignan phenolic acid seed germination antioxidant activity.Safety of 2,5-Diphenyloxazole.

Summary : The study aimed to evaluate the biosynthesis and accumulation of lignans, phenolic acids and also the antioxidant activities in 15 varieties of flax sprouts. The differential contents of lignans (13.30-8987μg g-1) and phenolic acids (72.55-597.1μg g-1) among 15 varieties of flax sprouts were observed The total antioxidant activities ranged from 147.2 to 332.8μmol TE g-1 in the flax sprouts. The expression levels of five genes in the lignin synthetic pathway were analyzed using RT-qPCR, and the results showed dramatical differences among different flax sprouts. Relatively dispersed anal. was showed by principal component anal. (PCA), and 15 flax sprouts were grouped by hierarchical cluster anal. (HCA) based on their phenolic acids, lignan compounds, length, gene expression and antioxidants after germination, primarily in relation to variety specificity. Present results would be instructive guidance for bio-fortification breeding and functional foods innovation in flaxseeds.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2,5-Diphenyloxazole( cas:92-71-7 ) is researched.Recommanded Product: 2,5-Diphenyloxazole.Anderson, M. R.; Andringa, S.; Anselmo, L.; Arushanova, E.; Asahi, S.; Askins, M.; Auty, D. J.; Back, A. R.; Barnard, Z.; Barros, N.; Bartlett, D.; Barao, F.; Bayes, R.; Beier, E. W.; Bialek, A.; Biller, S. D.; Blucher, E.; Bonventre, R.; Boulay, M.; Braid, D.; Caden, E.; Callaghan, E. J.; Caravaca, J.; Carvalho, J.; Cavalli, L.; Chauhan, D.; Chen, M.; Chkvorets, O.; Clark, K. J.; Cleveland, B.; Cookman, D.; Connors, C.; Coulter, I. T.; Cox, M. A.; Cressy, D.; Dai, X.; Darrach, C.; Davis-Purcell, B.; Deluce, C.; Depatie, M. M.; Descamps, F.; Dittmer, J.; Lodovico, F. Di; Duhaime, N.; Duncan, F.; Dunger, J.; Earle, A. D.; Fabris, D.; Falk, E.; Farrugia, A.; Fatemighomi, N.; Fischer, V.; Fletcher, E.; Ford, R.; Frankiewicz, K.; Gagnon, N.; Gaur, A.; Gilje, K.; Gonzalez-Reina, O. I.; Gooding, D.; Gorel, P.; Graham, K.; Grant, C.; Grove, J.; Grullon, S.; Guillian, E.; Hall, S.; Hallin, A. L.; Hallman, D.; Hans, S.; Hartnell, J.; Harvey, P.; Hedayatipour, M.; Heintzelman, W. J.; Heise, J.; Helmer, R. L.; Horne, D.; Hreljac, B.; Hu, J.; Hussain, S. M. A.; Iida, T.; Inacio, A. S.; Jackson, C. M.; Jelley, N. A.; Jillings, C. J.; Jones, C.; Jones, P. G.; Kamdin, K.; Kaptanoglu, T.; Kaspar, J.; Keeter, K.; Kefelian, C.; Khaghani, P.; Kippenbrock, L.; Klein, J. R.; Knapik, R.; Kofron, J.; Kormos, L. L.; Korte, S.; Krar, B.; Kraus, C.; Krauss, C. B.; Kroupova, T.; Labe, K.; Lafleur, F.; Lam, I.; Lan, C.; Land, B. J.; Lane, R.; Langrock, S.; LaTorre, A.; Lawson, I.; Lebanowski, L.; Lefeuvre, G. M.; Leming, E. J.; Li, A.; Lidgard, J.; Liggins, B.; Lin, Y. H.; Liu, X.; Liu, Y.; Lozza, V.; Luo, M.; Maguire, S.; Maio, A.; Majumdar, K.; Manecki, S.; Maneira, J.; Martin, R. D.; Marzec, E.; Mastbaum, A.; Mauel, J.; McCauley, N.; McDonald, A. B.; Mekarski, P.; Meyer, M.; Miller, C.; Mills, C.; Mlejnek, M.; Mony, E.; Morton-Blake, I.; Mottram, M. J.; Nae, S.; Nirkko, M.; Nolan, L. J.; Novikov, V. M.; O’Keeffe, H. M.; O’Sullivan, E.; Gann, G. D. Orebi; Parnell, M. J.; Paton, J.; Peeters, S. J. M.; Pershing, T.; Petriw, Z.; Petzoldt, J.; Pickard, L.; Pracsovics, D.; Prior, G.; Prouty, J. C.; Quirk, S.; Reichold, A.; Riccetto, S.; Richardson, R.; Rigan, M.; Robertson, A.; Rose, J.; Rosero, R.; Rost, P. M.; Rumleskie, J.; Schumaker, M. A.; Schwendener, M. H.; Scislowski, D.; Secrest, J.; Seddighin, M.; Segui, L.; Seibert, S.; Semenec, I.; Shaker, F.; Shantz, T.; Sharma, M. K.; Shokair, T. M.; Sibley, L.; Sinclair, J. R.; Singh, K.; Skensved, P.; SMILESy, M.; Sonley, T.; Stainforth, R.; Strait, M.; Stringer, M. I.; Svoboda, R.; Sorensen, A.; Tam, B.; Tatar, J.; Tian, L.; Tolich, N.; Tseng, J.; Tseung, H. W. C.; Turner, E.; Van Berg, R.; Veinot, J. G. C.; Virtue, C. J.; von Krosig, B.; Vazquez-Jauregui, E.; Walker, J. M. G.; Walker, M.; Walton, S. C.; Wang, J.; Ward, M.; Wasalski, O.; Waterfield, J.; Weigand, J. J.; White, R. F.; Wilson, J. R.; Winchester, T. J.; Woosaree, P.; Wright, A.; Yanez, J. P.; Yeh, M.; Zhang, T.; Zhang, Y.; Zhao, T.; Zuber, K.; Zummo, A.; The SNO& Collaboration published the article 《Development, characterisation, and deployment of the SNO+ liquid scintillator》 about this compound( cas:92-71-7 ) in Journal of Instrumentation. Keywords: neutrino alkylbenzene liquid scintillator solvent. Let’s learn more about this compound (cas:92-71-7).

A liquid scintillator consisting of linear alkylbenzene as the solvent and 2,5-diphenyloxazole as the fluor was developed for the SNO+ experiment This mixture was chosen as it is compatible with acrylic and has a competitive light yield to pre-existing liquid scintillators while conferring other advantages including longer attenuation lengths, superior safety characteristics, chem. simplicity, ease of handling, and logistical availability. Its properties have been extensively characterized and are presented here. This liquid scintillator is now used in several neutrino physics experiments in addition to SNO+.

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Related Products of 92-71-7. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Attempting to prepare a plastic scintillator from a biobased polymer. Author is Hamel, Matthieu; Lebouteiller, Guillaume.

A new plastic scintillator was prepared from a renewable polymer source. It is composed of the mighty 2,5-diphenyloxazole and 1,4-bis(2-methylstyryl)benzene mols. (PPO and bis-MSB), acting as primary and secondary fluorophores, resp., together dissolved in a polylactic acid matrix-PLA. This polymer is indeed considered as the biomass-based equivalent of petroleum-derived plastics in terms of mech. and optical properties. Subsequent to the bis-MSB emission, the emission wavelength is centered around 424 nm and the fluorescence decay time is in the nanosecond range. The material was fully characterized, and its scintillation performances were compared to a com. PVT-based plastic scintillator: EJ-200. Like polystyrene- or polyvinyltoluene-based scintillators, the material displayed a good response linearity with the energy of the incident gamma-ray. However, the observed scintillation yield was rather modest, with a reported 500 ph/MeV value when excited with a gamma-ray-emitting 60Co source. This preliminary test could pave the way to new and renewable polymers for unexpected applications such as nuclear physics.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2,5-Diphenyloxazole( cas:92-71-7 ) is researched.Recommanded Product: 92-71-7.Liu, Chengwei; Ji, Chong-Lei; Zhou, Tongliang; Hong, Xin; Szostak, Michal published the article 《Bimetallic Cooperative Catalysis for Decarbonylative Heteroarylation of Carboxylic Acids via C-O/C-H Coupling》 about this compound( cas:92-71-7 ) in Angewandte Chemie, International Edition. Keywords: chemoselective synthesis heterobiaryl decarbonylative heteroarylation carboxylic acid heteroarene; bimetallic cooperative catalysis chemoselective synthesis heterobiaryl; C−O/C−H bond activation; bimetallic catalysts; carboxylic acids; decarbonylation; heteroarylation. Let’s learn more about this compound (cas:92-71-7).

Cooperative bimetallic catalysis is a fundamental approach in modern synthetic chem. We report bimetallic cooperative catalysis for the direct decarbonylative heteroarylation of ubiquitous carboxylic acids via acyl C-O/C-H coupling [e.g., benzoxazole + benzoic acid → 2-phenylbenzoxazole (92%)]. This novel catalytic system exploits the cooperative action of a copper catalyst and a palladium catalyst in decarbonylation, which enables highly chemoselective synthesis of important heterobiaryl motifs through the coupling of carboxylic acids with heteroarenes in the absence of prefunctionalization or directing groups. This cooperative decarbonylative method uses common carboxylic acids and shows a remarkably broad substrate scope (>70 examples), including late-stage modification of pharmaceuticals and streamlined synthesis of bioactive agents. Extensive mechanistic and computational studies were conducted to gain insight into the mechanism of the reaction. The key step involves intersection of the two catalytic cycles via transmetalation of the copper-aryl species with the palladium(II) intermediate generated by oxidative addition/decarbonylation.

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Recommanded Product: 2,5-Diphenyloxazole. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Catalytic C-H/C-F Coupling of Azoles and Acyl Fluorides. Author is Ogiwara, Yohei; Iino, Yurika; Sakai, Norio.

A method for the palladium/copper-catalyzed direct acylation of azoles with acyl fluorides is described. This study reports the first examples of acyl fluorides being used as acylation reagents in transition-metal-catalyzed aromatic C-H bond functionalization reactions. Depending on the reaction temperature, decarbonylative coupling may also occur. Mechanistic studies suggest that the cleavage of the aromatic C-H bond, promoted by a copper-phosphine species, is not the rate-limiting step of this acylation.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Catalysis Science & Technology called One-pot dual catalysis for the hydrogenation of heteroarenes and arenes, Author is Chatterjee, Basujit; Kalsi, Deepti; Kaithal, Akash; Bordet, Alexis; Leitner, Walter; Gunanathan, Chidambaram, which mentions a compound: 92-71-7, SMILESS is C1(C2=CC=CC=C2)=NC=C(C3=CC=CC=C3)O1, Molecular C15H11NO, Synthetic Route of C15H11NO.

A simple dinuclear monohydrido bridged ruthenium complex [{(η6-p-cymene)RuCl}2(μ-H-μ-Cl)] acted as an efficient and selective catalyst for the hydrogenation of various heteroarenes and arenes. The nature of the catalytically active species was investigated using a combination of techniques including in situ reaction monitoring, kinetic studies, quant. poisoning experiments and electron microscopy, evidencing a dual reactivity. The results suggested that the hydrogenation of heteroarenes proceeded via mol. catalysis. In particular, monitoring the reaction progress by NMR spectroscopy indicated that [{(η6-p-cymene)RuCl}2(μ-H-μ-Cl)] was transformed into monomeric ruthenium intermediates, which upon subsequent activation of dihydrogen and hydride transfer accomplish the hydrogenation of heteroarenes under homogeneous conditions. In contrast, carbocyclic aryl motifs were hydrogenated via a heterogeneous pathway, by in situ generated ruthenium nanoparticles. Remarkably, these hydrogenation reactions could be performed using mol. hydrogen under solvent-free conditions or with 1,4-dioxane, and thus gave access to a broad range of saturated heterocycles such as 1,2,3,4-tetrahydroquinoline and carbocycles such as perhydro-9-anthracenemethanol while generating no waste.

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