• Many methods exist for the organic synthesis of pyrazine and its derivatives. (wikipedia.org)
  • Pyrazine derivatives are multifunctional, e.g. dibenzo pyrazine is an important dye, phenazine is widely known for its anti-tumor, antibacterial and diuretic properties and tetramethylpyazine has been reported to be able to catch the superoxide anions and reduce human granulocyte's production of nitrogen oxides. (chemicalbook.com)
  • Herein, a set of 26 synthetic chalcone derivatives with alkyl substituted pyrazine heterocycle A and four types of the monophenolic ring B, were evaluated for the potential radical scavenging and antioxidant cellular capacity influencing the growth of cells exposed to H2O2. (irb.hr)
  • A series of styryl pyrazine derivatives with different electron donating or withdrawing substituents were synthesized. (pku.edu.cn)
  • Properties of substituents have great influence on the photophysical and photochendcal behavior of the synthesized pyrazine derivatives. (pku.edu.cn)
  • Study on Photophysical Behaviors of Styryl Pyrazine Derivatives[J]. Acta Phys. (pku.edu.cn)
  • A regioselective method for synthesis of pyrido[3,4-b]pyrazine derivatives were reported in high yield and short reaction times through condensation reaction between 3,4-diaminopyridine and arylglyoxals derivatives in DMF/EtOH at 55 oC. (nsmsi.ir)
  • 13] Kano S., Yuasa Y., Synthesis of 2‐Arylpyrido[3,4‐ b ]pyrazine Derivatives through Condensation of 3,4‐Diaminopyridine with β ‐Keto Sulfoxides . (nsmsi.ir)
  • In order to find novel pyrazine- and thiazole-based derivatives with potent antioxidant properties, eight pyrazine-thiazole bi-heteroaryl compounds were designed and prepared via active group splicing method between pyrazine- N - oxides and thiazoles. (sioc-journal.cn)
  • Pyrazine is less basic than pyridine, pyridazine and pyrimidine. (wikipedia.org)
  • Similar with pyridine, pyrazines are weakly aromatic and less prone to electrophilic substitution reaction, but easily reactive with nucleophilic reagent. (chemicalbook.com)
  • 6] Lee B.-L., Yamamoto T., Syntheses of New Alternating CT-Type Copolymers of Thiophene and Pyrido[3,4- b ]pyrazine Units: Their Optical and Electrochemical Properties in Comparison with Similar CT Copolymers of Thiophene with Pyridine and Quinoxaline . (nsmsi.ir)
  • In the Staedel-Rugheimer pyrazine synthesis (1876), 2-chloroacetophenone is reacted with ammonia to the amino ketone, then condensed and then oxidized to a pyrazine. (wikipedia.org)
  • A variation is the Gutknecht pyrazine synthesis (1879) also based on this selfcondensation, but differing in the way the alpha-ketoamine is synthesised. (wikipedia.org)
  • A facile synthesis of imidazo[4,5- b ]pyridines and -pyrazines is described using a Pd-catalyzed amide coupling reaction. (acs.org)
  • The scale-up of the synthesis of 3-aminoimidazo[1,2- a ]pyrazines can be a key step in drug development. (thieme.de)
  • Synthesis of Pyrazine-based Hole Transport Layer and Its Application in p -i- n Planar Perovskite Solar Cells [J]. Acta Phys. (pku.edu.cn)
  • 3] Yuan M.-C., Chiu M.-Y., Chiang C.-M., Wei K.-H., Synthesis and Characterization of Pyrido[3,4- b ]pyrazine-Based Low-Bandgap Copolymers for Bulk Heterojunction Solar Cells . (nsmsi.ir)
  • Synthesis and Antioxidant Properties of Pyrazine-Thiazole Bi-heteroaryl Compounds[J]. Chinese Journal of Organic Chemistry , 2021, 41(6): 2445-2453. (sioc-journal.cn)
  • Synthesis of C-5 arylated imidazo[1,5-a]pyrazines. (bvsalud.org)
  • Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. (wikipedia.org)
  • Pyrazine odour makes visually conspicuous prey aversive. (ox.ac.uk)
  • Pyrazine is an odour commonly used in insect warning displays, and has previously been shown to elicit unlearned biases against common warning colours, e.g. yellow and red in naive predators. (ox.ac.uk)
  • Inherently chiral pyrazine derivative of calix[4]arene was synthesised from calixquinone derivative and ethylenediamine in the presence of copper (II) acetate as a racemate. (eurekaselect.com)
  • Pyrazines refer to heterocyclic compounds containing two nitrogen atoms on the 1,4 sites of benzene ring. (chemicalbook.com)
  • Related complexes of dibenzo-(f,h)quinoxaline ((LH2)-H-4), 2,3-diphenyl-quinoxaline ((LH2)-H-5), and dibenzo{[}3,2-a:2',3'-c]phenazine ((LH2)-H-6) have also been prepared, allowing the effects of strapping together the phenyl rings ((LH2)-H-4 and (LH2)-H-6) and/or extension of the conjugation from pyrazine to quinoxaline ((LH2)-H-5 and (LH2)-H-6) to be investigated. (northumbria.ac.uk)
  • Previous studies have shown that quinoxaline (Q) oxidation with electrochemically regenerated KMnO4, with the formation of pyrazine-2,3-dicarboxylic acid (PDCA), is possible using Pt, Ni, stainless steel and Cu electrodes. (upt.ro)
  • Pyrazine and a variety of alkylpyrazines are flavor and aroma compounds found in baked and roasted goods. (wikipedia.org)
  • Pyrazines are components of many important compounds, including pteridines, some vitamins and antibiotics, and numerous dyes called phenazines. (dictionary.com)
  • SERVICES Pyrazine Specialties offers an extensive product line of over 150 pyrazine compounds. (slideshare.net)
  • In addition, it was found that the antioxidant activity of pyrazine-thiazole bi-heteroaryl compounds was significantly higher than that of pyrazine-oxazole bi-heteroaryl compound. (sioc-journal.cn)
  • Pyrazine, pyrimidine and pyridazine are isomerides to each other. (chemicalbook.com)
  • Single-Molecule Field-Effect Transistors with Graphene Electrodes and Covalent Pyrazine Linkers [J]. Acta Phys. (pku.edu.cn)
  • In order to improve current knowledge and to expand the variety of electrodes used for the pyrazine-2,3-dicarboxilic acid (PDCA) production process, we investigated the behavior of the copper alloy anodes brass and bronze. (upt.ro)
  • MUMBAI, MAHARASHTRA - Forecast Chemicals, a leading chemical manufacturer and exporter in India, is pleased to announce that they are now offering pyrazine-2-sulfonylchloride to their international customers. (chemicalkaikeshop.com)
  • Pyrazine -2-sulfonylchloride is a versatile chemical that is used in the pharmaceutical industry, among others. (chemicalkaikeshop.com)
  • We are proud to offer our clients access to pyrazine-2-sulfonylchloride, which is a high-quality, cost-effective, and versatile chemical. (chemicalkaikeshop.com)
  • Backbone engineering was performed on highly rigid semiconducting polymers to include diketopyrropyrrole (DPP) units combined with pyrazine-containing moieties. (rsc.org)
  • We report an experimental observation of the spin transition in thin films of a 3D Hoffman framework nanocrystalline material Fe(pyrazine)[Pt(CN) 4 ] deposited by nanosecond laser ablation at λ = 1064 nm of its cryo-cooled colloidal suspension in water and water-free organic solvents. (aip.org)
  • Pure pyrazine can hardly be found in nature, but its residue exists in the pterin structure of folic acid. (chemicalbook.com)
  • We are very excited about the opportunities that pyrazine-2-sulfonylchloride presents for us and our customers," says the spokesperson for Forecast Chemicals. (chemicalkaikeshop.com)
  • For more information about pyrazine-2-sulfonylchloride or any of Forecast Chemicals' other products and services, please visit their website or contact their sales team directly. (chemicalkaikeshop.com)
  • 3-Aminoimidazo[1,2- a ]pyrazines are important building blocks for the pharmaceutical and agrochemical industries, as this structural motif is present in a variety of drug candidates and constitutes a valuable sub-structure in combinatorial libraries. (thieme.de)
  • By developing a one-pot, two-step process, the Groebke-Blackburn-Bienaymé cyclization can easily and efficiently access 3-aminoimidazo[1,2- a ]pyrazines which are important motifs in biologically active molecules. (thieme.de)
  • We designed two experiments to test for similar effects of pyrazine on the conspicuousness of prey, perhaps the most ubiquitous aspect of aposematic coloration. (ox.ac.uk)
  • In this work, the geometrical and electronic properties of thieno[3,4-b]pyrazine (TP) based donor-acceptor conjugated oligomers were studied by density functional theory (DFT) at the B3LYP level with 6-31G (d,p) basis set. (scholarsresearchlibrary.com)
  • Crystal Structure and Photophysical Properties of an Iridium(Ⅲ) Pyrazine Complex [J]. Acta Phys. (pku.edu.cn)
  • I swore before that I could not beat it.If I killed the ghost cultivator as soon Me 36 Male Enhancement Pills sex time increase food as I came up, would not it be a slap pyrazine male enhancement review in the face This pain seems to be settled. (profitzon.net)
  • Only in the presence of pyrazine did birds show a bias against conspicuously coloured food, and this occurred whether or not they had previously experienced food that contrasted with the background. (ox.ac.uk)
  • Pyrazine Specialties has distilled some of the purest pyrazine products in the industry! (slideshare.net)
  • CTC CTC Organics has been serving the flavor, fragrance and pharmaceutical industry for more than 40 years along with our sister company, Pyrazine Specialties. (slideshare.net)
  • Pyrazines are prepared through gas phase catalytic dehydrogenation of ethanolamine in industry. (chemicalbook.com)
  • An overview of Genetic Toxicology Bacterial Mutagenicity study conclusions related to Pyrazine ethanethiol (35250-53-4). (nih.gov)
  • Estelle Durantie presents an industrial process to access 3-aminoimidazo[1,2-a]pyrazines. (thieme.de)
  • Countless screams came one after another.A demon devouring rat looked pyrazine male enhancement review at Xiao Yu with its lustful eyes, and suddenly rushed forward, the Legit Male Enhancement Pills pyrazine male enhancement review four fangs in its mouth glowed coldly, and took Xiao Yu is face with killing intent. (profitzon.net)
  • HISTORY Dr. Liu Dr. Kimbrough In 1972, Dr. Fred W.J. Liu and fellow chemist Dr. Raymond D. Kimbrough began the process of manufacturing pyrazines, the first such manufacturing company in the United States. (slideshare.net)
  • In order to benchmark the quality of our calculated dipole matrix elements for pyrazine we calculated the photoionization cross sections and photoelectron angular distributions (shown in the Figure). (uam.es)