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Journal articles on the topic 'Aromatic Amine N-oxides'

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Published: 5 June 2025
Last updated: 1 August 2025

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1

R., K. AGARWAL. "Synthesis and Characterisation of Mercury(II) Complexes of some Aromatic Amine N-Oxides." Journal of Indian Chemical Society Vol. 65, Jun 1988 (1988): 448–49. https://doi.org/10.5281/zenodo.6303515.

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Department of Chemistry, Lajpat Rai (Post-Graduate) College, Sahibabad -201 005 <em>Manuscript received </em><em>23 October</em> <em>1986, </em><em>revised 18 March 1988, accepted 6 April 1988</em> Synthesis and Characterisation of Mercury(II) Complexes of some Aromatic Amine <em>N</em>-Oxides. &nbsp;
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2

Lynch, Daniel E., Graham Smith, Karl A. Byriel, and Colin H. L. Kennard. "[4-(N,N-Dimethylamino)phenyl]diphenylphosphine Oxide and its Partial Oxides: An Isomorphous Crystal Series." Australian Journal of Chemistry 56, no. 11 (2003): 1135. http://dx.doi.org/10.1071/ch03089.

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The title compound [4-(N,N-dimethylamino)phenyl]diphenylphosphine oxide (1) has been synthesized and its single-crystal X-ray structure determined. The structures of two ‘partial’ oxides of the parent compound, (2) and (3) (50% and 25% oxidized), isolated from the intermediate phosphine reaction product have also been determined, yielding an unusual isomorphous crystal series. An apparent P–O bond shortening with increasing oxidation is also observed across the series (1)–(3) (1.480(4), 1.351(4), 1.280(4) Å respectively) and is considered an artifact of the structure refinement. The packing in
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3

Chiericato Júnior, Glaico. "Complexes of lead(II) perchlorate and hexafluorophosphate with aromatic amine N-oxides." Eclética Química Journal 14, no. 1 (2018): 49. http://dx.doi.org/10.26850/1678-4618eqj.v14.1.1989.p49-56.

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4

Wolińska, Ewa. "Chiral oxazoline ligands with two different six-membered azaheteroaromatic rings – synthesis and application in the Cu-catalyzed nitroaldol reaction." Heterocyclic Communications 22, no. 2 (2016): 85–94. http://dx.doi.org/10.1515/hc-2016-0001.

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AbstractSynthesis and catalytic activity of chiral ligands 5,6-diphenyl-3-{3-[(4S/R)-4-R/Ar-4,5-dihydro-1,3-oxazol-2-yl]pyridin-2-yl}amino-1,2,4-triazines 2 and their analogs 3 possessing an N-oxide function in the pyridine ring are described. The pivotal step in the synthesis of ligands 2 is the Buchwald-Hartwig Pd-catalyzed cross-coupling reaction between 3-bromo-5,6-diphenyl-1,2,4-triazine (7a) and enantiopure 3-(4,5-dihydro-1,3-oxazol-2-yl)pyridin-2-amines 6a–d. Aromatic nucleophilic substitution of chlorine in 3-chloro-5,6-diphenyl-1,2,4-triazine (7b) with 3-(4,5-dihydro-1,3-oxazol-2-yl)p
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5

Siim, Bronwyn G., Kevin O. Hicks, Susan M. Pullen, Pierre L. van Zijl, William A. Denny, and William R. Wilson. "Comparison of aromatic and tertiary amine N-oxides of acridine DNA intercalators as bioreductive drugs." Biochemical Pharmacology 60, no. 7 (2000): 969–78. http://dx.doi.org/10.1016/s0006-2952(00)00420-2.

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6

Sarma, Rupam, та Jubaraj Bikash Baruah. "B···π-aromatic and C–H···B interactions in co-crystals of aromatic amine N-oxides with p-phenylenediboronic acid". Journal of Molecular Structure 920, № 1-3 (2009): 350–54. http://dx.doi.org/10.1016/j.molstruc.2008.11.028.

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7

Potmischil, Francisc, Helmut Herzog, and Joachim Buddrus. "Hydroacridines. Part 17—Stereospecific influence of the N+—O- group on1JC,C couplings in non-aromatic amine oxides." Magnetic Resonance in Chemistry 36, no. 4 (1998): 240–44. http://dx.doi.org/10.1002/(sici)1097-458x(199804)36:4<240::aid-omr260>3.0.co;2-9.

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8

KISHOR, ARORA. "Thermal Decomposition Kinetics of Thorium(IV) and Dioxouranium(VI) Complexes." Journal of Indian Chemical Society Vol. 74, Aug 1997 (1997): 589–96. https://doi.org/10.5281/zenodo.5890705.

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Department of Chemistry, Government Post-Graduate College, Morena-476 001 Thermal decomposition kinetics studies of thermal reactions are useful in&nbsp;studying parameters like free energy change (&Delta;<em>G</em>*), enthalpy change (&Delta;<em>H*</em>), activation energy (<em>E</em>*) and ultimately the entropy change (&Delta;<em>S</em>*) and pre-exponential factor (<em>A</em>) or frequency factor (<em>Z</em>). This concept was f&quot;u-st proposed somewhere In 1928. Since then so many methods and equations have been put forward for studying thermal decomposition kinetics of the reaction Pr
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9

Sarma, Rupam, та Jubaraj Bikash Baruah. "Corrigendum to “B···π-aromatic and C–H···B interactions in co-crystals of aromatic amine N-oxides with p-phenylenediboronic acid” Journal of Molecular Structure 920 (2009) 350–354". Journal of Molecular Structure 928, № 1-3 (2009): 195. http://dx.doi.org/10.1016/j.molstruc.2009.03.001.

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10

Read, RW, and WP Norris. "The Nucleophilic Substitution Reactions of 5- and 7-Chloro-4,6-dinitrobenzofurazan 1-Oxide by Aromatic Amines." Australian Journal of Chemistry 38, no. 3 (1985): 435. http://dx.doi.org/10.1071/ch9850435.

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7-Chloro-4,6-dinitrobenzofurazan 1-oxide is a powerful electrophile which reacts with a variety of primary and secondary aromatic amines, even those with deactivating substituents , to give arylamino - benzofurazan oxides under mild conditions. Tertiary aromatic amines react through carbon to give aminoarylbenzofurazan oxides. During, or as a consequence of, the substitution reactions, tautomerism occurs to give in all but one example an equilibrium mixture of 5- and 7-substituted 4,6-dinitrobenzofurazan oxides in which the latter predominates. Thus 5-chloro-4,6-dinitrobenzofurazan 1-oxide and
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11

Uğur, Elif, and Reyhan Nergiz Ünal. "Diyette Proteinler, Aminoasitler ve Bazı Diğer Aminli Bileşiklerin Kardiyovasküler Sistem Üzerine Metabolik Etkileri." Turkish Journal of Agriculture - Food Science and Technology 5, no. 1 (2017): 71. http://dx.doi.org/10.24925/turjaf.v5i1.71-83.936.

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During the prevention and treatment of cardiovascular diseases, first cause of deaths in the world, diet has a vital role. While nutrition programs for the cardiovascular health generally focus on lipids and carbohydrates, effects of proteins are not well concerned. Thus this review is written in order to examine effect of proteins, amino acids, and the other amine consisting compounds on cardiovascular system. Because of that animal or plant derived proteins have different protein composition in different foods such as dairy products, egg, meat, chicken, fish, pulse and grains, their effects
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12

Buján, Elba I., and María Laura Salum. "A simple synthesis of benzimidazole N-oxides from 2-nitroaniline derivatives — Scope and limitations." Canadian Journal of Chemistry 82, no. 8 (2004): 1322–27. http://dx.doi.org/10.1139/v04-083.

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Several benzimidazole N-oxide derivatives were synthesized in very good yield by heating at reflux the corresponding N-alkyl-2-nitroaniline derivative with NaOH in 60% 1,4-dioxane–water. The effect of substituents on the aromatic ring and amino group on the reaction is discussed.Key words: synthesis, benzimidazole N-oxides.
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13

Akbar Ali, Aghayev, Musfatayeva Naila Abdulla, Shahtakhtinskaya Pari Turabkhan, Muradov Mahal Mayil, and Nasirova Irada Mammad. "THE CONVERSION OF N – METHYLANILINE AND N –, 2 – DIMETHYLANILINE BY USING DIFFERENT CATALYSTS." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 8 (2017): 6393–96. http://dx.doi.org/10.24297/jac.v13i8.5743.

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The catalytic conversion of N methylaniline and N, 2 dimethylaniline in the presence of Pd HSHM, CuFe2O4·γ·Al2O3 and vanadium chromium aluminium (VChA) oxide systems has been investigated. The comparative analysis of the results of the conversion of three different feedstocks with VChA catalyst shows that the xylidines, especially 2,6 dimethylaniline is formed as a result of the methylation of aromatic amine because of the carbon in nucleus.
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14

Rodríguez Arce, Esteban, M. Florencia Mosquillo, Leticia Pérez-Díaz, et al. "Aromatic amine N-oxide organometallic compounds: searching for prospective agents against infectious diseases." Dalton Transactions 44, no. 32 (2015): 14453–64. http://dx.doi.org/10.1039/c5dt00557d.

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15

Angamuthu, Venkatachalam, Chia-Hung Lee, and Dar-Fu Tai. "Brucine Diol-Catalyzed Enantioselective Morita-Baylis-Hillman Reaction in the Presence of Brucine N-Oxide." Catalysts 11, no. 2 (2021): 237. http://dx.doi.org/10.3390/catal11020237.

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Brucine diol (BD) catalyzed asymmetric Morita–Baylis–Hillman (MBH) reaction is observed for the first time. Brucine N-oxide (BNO) was found to not have an effective chiral catalyst. Faster reaction rate was obtained using unsaturated ester or aromatic aldehydes in the presence of BNO. 4-Nitrobenzaldehyde and α,β-unsaturated ketone/ester were converted to the MBH adduct in moderate yields (up to 74%) with 70% ee value by this catalytic system. The mechanism of BD catalysis is probably initiated by conjugating the vicinal diol of BD to the carbonyl group of the aromatic aldehyde through hydrogen
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16

Larson, Peter G., and David M. Ferguson. "4-Amino-2-butyl-7-methoxycarbonylthiazolo[4,5-c]quinoline." Molbank 2021, no. 4 (2021): M1305. http://dx.doi.org/10.3390/m1305.

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4-Amino-imidazo-, oxazolo-, and thiazoloquinolines are key structural scaffolds in the design of nucleoside base analogs for use as therapeutic agents. Current strategies for arriving at diverse substitutions at the C6–C9 positions of the thiazolo- and oxazoloquinolines, however, are limited due to difficulties in arriving at the thiazoloquinoline-5N-oxide intermediate using electron deficient aromatic systems. Here, we demonstrate a synthetic route to obtain substituted thiazoloquinolines with electron-withdrawing groups at the C7 position. The target compound, 4-amino-2-butyl-7-methoxycarbon
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17

Trabjerg, I., and T. Hansen. "Photoacoustic powder spectra of Ni(II) and Co(II) complexes with aromatic amine N-oxide ligands." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 54, no. 11 (1998): 1715–20. http://dx.doi.org/10.1016/s1386-1425(98)00102-4.

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18

Koduri, Ramesh Goud, Ravi Varala, Sathyanarayana Boodida, Ramakanth Pagadala, and Thirupathi Damera. "Ultrasound Assisted and SO4-2/SnO2-Catalyzed One-Pot Multicomponent Reaction for the Synthesis of 1,2,3,4,6-Pentasubstituted Piperidines." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 34, no. 02 (2024): 211. http://dx.doi.org/10.59467/ijhc.2024.34.211.

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A feasible and prominent comparative study is progressing for the construction of 1,2,3,4,6-pentasubstituted piperidines through a conventional organic synthetic method and an ultrasound-assisted method. This is a one-pot, three-component method achieved by simply available reactants such as aromatic aldehydes, aromatic amines, ethyl acetoacetate, and a little amount of sulfated tin oxide (STO) catalyst (SO4-2/SnO2 -STO) in ethanol as a solvent. In this single-step process, new 4 C-C and 2 C-N bonds are developed, creating an entire moiety. The sonication implants lower the activation energy b
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19

González, Juan F., María-Auxiliadora Dea-Ayuela, Lena Huck, et al. "Dual Antitubercular and Antileishmanial Profiles of Quinoxaline Di-N-Oxides Containing an Amino Acidic Side Chain." Pharmaceuticals 17, no. 4 (2024): 487. http://dx.doi.org/10.3390/ph17040487.

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We present a new category of quinoxaline di-N-oxides (QdNOs) containing amino acid side chains with dual antituberculosis and antileishmanial activity. These compounds were synthesized by combining a regioselective 2,5-piperazinedione opening and a Beirut reaction and were screened for their activity against Mycobacterium tuberculosis and the promastigote and amastigote forms of representative species of the Leishmania genus. Most QdNOs exhibited promising antitubercular activity with IC50 values ranging from 4.28 to 49.95 μM, comparable to clinically established drugs. Structure–activity rela
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20

Mittal, Rupali, Anupam Mishra, and Satish K. Awasthi. "A Greener Approach for the Chemoselective Boc Protection of Amines Using Sulfonated Reduced Graphene Oxide as a Catalyst in Metal- and Solvent-Free Conditions." Synthesis 52, no. 04 (2019): 591–601. http://dx.doi.org/10.1055/s-0039-1690239.

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Sulfonated reduced graphene oxide (SrGO) has displayed great potential as a solid acid catalyst due to its efficiency, cost-effectiveness, and reliability. In this study, SrGO was synthesized by the introduction of sulfonic acid-containing aryl radicals onto chemically reduced graphene oxide using ultrasonication. The SrGO catalyst was characterized by Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy, powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy
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21

Kono, Y., H. Shibata, Y. Kodama, and Y. Sawa. "The suppression of the N-nitrosating reaction by chlorogenic acid." Biochemical Journal 312, no. 3 (1995): 947–53. http://dx.doi.org/10.1042/bj3120947.

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N-Nitrosation of a model aromatic amine (2,3-diamino-naphthalene) by the N-nitrosating agent produced by nitrite in acidic solution was inhibited by a polyphenol, chlorogenic acid, which is an ester of caffeic acid quinic acid. Caffeic acid also inhibited the N-nitrosation, but quinic acid did not. 1,2-Benzenediols and 3,4-dihydroxybenzoic acid had inhibitory activities. Chlorogenic acid, caffeic acid, 1,2-benzenediols and 3,4-dihydroxybenzoic acid were able to scavenge the stable free radical, 1,1-diphenyl-2-picrylhydrazyl. Chlorogenic acid was found to be nitrated by acidic nitrite. The kine
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22

Panteleieva, Olha S., Vira V. Ponomarova, Alexander V. Shtemenko та Kostiantyn V. Domasevitch. "Supramolecular networks supported by the anion...π linkage of Keggin-type heteropolyoxotungstates". Acta Crystallographica Section C Structural Chemistry 76, № 8 (2020): 753–62. http://dx.doi.org/10.1107/s205322962000950x.

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Anion...π interactions are newly recognized weak supramolecular forces which are relevant to many types of electron-deficient aromatic substrates. Being less competitive with respect to conventional hydrogen bonding, anion...π interactions are only rarely considered as a crystal-structure-defining factor. Their significance dramatically increases for polyoxometalate (POM) species, which offer extended oxide surfaces for maintaining dense aromatic/inorganic stacks. The structures of tetrakis(caffeinium) μ12-silicato-tetracosa-μ2-oxido-dodecaoxidododecatungsten trihydrate, (C8H11N4O2)4[SiW12O40]
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23

Carloni, Partricia, Lucedio Greci, Pierluigi Stipa, et al. "Competition between nucleophilic attack and electron transfer in the reaction of indoledione imine N-oxides with primary aromatic amines." Journal of the Chemical Society, Perkin Transactions 2, no. 1 (1990): 185. http://dx.doi.org/10.1039/p29900000185.

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24

Hamann, Thomas, Dagmar Henschel, Ilona Lange, Oliver Moers, Armand Blaschette, and Peter G. Jones. "Polysulfonylamine, CLVII [1]. Molekulare Cokristalle aus Di(4-halogenbenzolsulfonyl)aminen und Sauerstoffbasen: Lamellare Schichten mit engen Zwischenschichtkontakten der Art C-H···Hal, Cl ··· Cl oder Br ··· Br / Molecular Co-crystals of Di(4-halobenzenesulfonyl)amines and Oxygen Bases: Lamellar Layers with Close C-H···Hal, Cl · · · Cl or Br · · · Br." Zeitschrift für Naturforschung B 57, no. 9 (2002): 1051–65. http://dx.doi.org/10.1515/znb-2002-0912.

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Di(4-fluorobenzenesulfonyl)amine (DFBSA), di(4-chlorobenzenesulfonyl)amine (DCBSA) or di(4-bromobenzenesulfonyl)amine (DBBSA) were co-crystallized with equimolar amounts of pyridine-N-oxide (PyO), dimethyl formamide (DMF) or 1,3-dimethylurea (DMU), respectively, to form the supramolecular complexes DFBSA·PyO (1; triclinic, space group P1 , Z = 1), DCBSA·DMF (2; monoclinic, P21/n, Z = 1) and DBBSA·DMU (3; triclinic, P1 , Z = 1). Throughout the triad, the molecules are ordered into lamellar layers parallel to the xy plane. Owing to the folded conformations of the disulfonylamines, the layers dis
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25

Kartel, M. T., K. V. Voitko, Y. Grebelna, et al. "Changes in the structure and properties of graphene oxide surfaces during reduction and modification." Himia, Fizika ta Tehnologia Poverhni 13, no. 2 (2022): 179–89. http://dx.doi.org/10.15407/hftp13.02.179.

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The aim of the current study was to find changes in the structure and state of the surface of graphene oxide (GO) under the conditions of its reduction and modification by hetero atoms of nitrogen and amino acids. Reduction of GO was performed with hydrazine hydrate (R-GO), doping with nitrogen atoms - urea impregnation and subsequent heat treatment (N-GO), and the surface of GO was modified with sulfur-containing amino acid – L-cysteine by nucleophilic addition (L-GO). The samples obtained were characterized by analytical methods, such as Raman scattering, IR spectroscopy, TPD-mass-spectromet
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26

Aydin Pashabayli, Narmin, and Omar Abdurahim Sadygov. "ISOMERIZATION OF CYCLOHEXANOL TO METHYLCYCLOPENTENES AND SYNTHESIS OF AMINOMETHYLCYCLOPENTANETHIOLS AND INVESTIGATION OF THEIR BACTERICIDAL PROPERTIES." Elmi Əsərlər 3, no. 2 (2024): 111–18. https://doi.org/10.61413/jnsb2364.

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This work presents the results of studying the single-reactor dehydration and isomerization of cyclohexanol over modified zirconium nitrate-activated (γ) alumina oxide into methylcyclopentene isomers. It is shown that the dehydration of cyclohexanol over modified alumina oxide begins at 220°C. With increasing temperature, the degree of dehydration reaches a maximum (98-100%) at 350°C. It is established that at 400-460°C skeletal isomerization of cyclohexene occurs, resulting in the formation of methylcyclopentene isomers. It was found that raising the temperature above 470°C is not advisable,
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27

Chulenbayeva, Laura, Argul Issilbayeva, Aliya Sailybayeva, Makhabbat Bekbossynova, Samat Kozhakhmetov, and Almagul Kushugulova. "Short-Chain Fatty Acids and Their Metabolic Interactions in Heart Failure." Biomedicines 13, no. 2 (2025): 343. https://doi.org/10.3390/biomedicines13020343.

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Short-chain fatty acids (SCFAs), produced through fermentation of dietary fibers by gut bacteria, play a central role in modulating cardiovascular function and heart failure (HF) development. The progression of HF is influenced by intestinal barrier dysfunction and microbial translocation, where SCFAs serve as key mediators in the gut–heart axis. This review examines the complex metabolic interactions between SCFAs and other gut microbiota metabolites in HF, including their relationships with trimethylamine N-oxide (TMAO), aromatic amino acids (AAAs), B vitamins, and bile acids (BAs). We analy
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28

Al-Mamoori, Dima Faris Abdulkhadum, Naqaa Kareem Ali, and Elaf Muner Abd Al Kadhim AL-Khafaji. "Antioxidant Properties [Singlet Oxygen Scavenging and Nitric Oxide Radical Scavenging] of Thymus vulgaris and Piper nigrum and Screening of Its Main Constitutes Using Fourier Transform Infrared Spectroscopy Technique." South Asian Research Journal of Biology and Applied Biosciences 7, no. 02 (2025): 127–36. https://doi.org/10.36346/sarjbab.2025.v07i02.012.

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Several types of medical substances derive from natural origins. The present pharmaceutical market contains fifty percent of drugs which derive from plants or utilize natural substances as their active components. Natural approaches became more widespread through the urgent need for new medical solutions to health problems. The selectivity levels proved superior when natural chemicals were used to target antibiotic-resistant bacteria and cancer cells when compared to artificial chemicals. The research investigated two aspects of antioxidant properties that included Singlet Oxygen Scavenging an
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29

Zhang, Xiao-Lan, Xiao-Ling Liu, Qiu-Ying Wang, Zhen-Zhong Huang, and Shou-Ri Sheng. "Synthesis and characterization of novel fluorinated poly(ether imide)s containing pyridine and/or phenylphosphine oxide moieties." High Performance Polymers 31, no. 5 (2018): 485–96. http://dx.doi.org/10.1177/0954008318801905.

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4-(4-Trifluoromethylphenyl)-2,6-bis[4-(4-amino-2-trifluoromethylphenoxy)phenyl]pyridine (9FPBAPP), as a new aromatic diamine, was prepared by a modified Chichibabin reaction of 4-(4-nitro-2-trifluoromethylphenoxy)acetophenone with 4-triflouromethylbenzaldehyde, followed by a catalytic reduction. A series of fluorinated poly(ether imide)s containing pyridine and/or phenylphosphine oxide moieties were prepared from bis(3-aminophenyl)phenylphosphine oxide (BAPPO), 2,2′-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA), and 9FPBAPP via a conventional two-step thermal imidization procedu
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30

Martin, William P., Daniel Malmodin, Anders Pedersen, et al. "Urinary Metabolomic Changes Accompanying Albuminuria Remission following Gastric Bypass Surgery for Type 2 Diabetic Kidney Disease." Metabolites 12, no. 2 (2022): 139. http://dx.doi.org/10.3390/metabo12020139.

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In the Microvascular Outcomes after Metabolic Surgery randomised clinical trial (MOMS RCT, NCT01821508), combined metabolic surgery (gastric bypass) plus medical therapy (CSM) was superior to medical therapy alone (MTA) as a means of achieving albuminuria remission at 2-year follow-up in patients with obesity and early diabetic kidney disease (DKD). In the present study, we assessed the urinary 1H-NMR metabolome in a subgroup of patients from both arms of the MOMS RCT at baseline and 6-month follow-up. Whilst CSM and MTA both reduced the urinary excretion of sugars, CSM generated a distinctive
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31

Tanase, Daniela Maria, Evelina Maria Gosav, Ecaterina Neculae, et al. "Role of Gut Microbiota on Onset and Progression of Microvascular Complications of Type 2 Diabetes (T2DM)." Nutrients 12, no. 12 (2020): 3719. http://dx.doi.org/10.3390/nu12123719.

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Type 2 diabetes mellitus (T2DM) remains one of the most problematic and economic consumer disorders worldwide, with growing prevalence and incidence. Over the last years, substantial research has highlighted the intricate relationship among gut microbiota, dysbiosis and metabolic syndromes development. Changes in the gut microbiome composition lead to an imbalanced gastrointestinal habitat which promotes abnormal production of metabolites, inflammatory status, glucose metabolism alteration and even insulin resistance (IR). Short-chain fatty acids (SCFAs), trimethylamine N-oxide (TMAO), lipopol
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32

Lukhman, Syed, Nadiah Natar, Nureel Ghani, et al. "Preparation of Polyaniline/TiO2 Photovoltaic Solar Cell." Science Letters 15, no. 2 (2021): 102–15. http://dx.doi.org/10.24191/sl.v15i2.13833.

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Polyaniline (PANI) and Kronos C doped Titanium dioxide (TiO2) was fabricated as PANI/TiO2 solar cell and reported on its simple photovoltaic performance detected by using voltameter and tested for stability for 12 months. The PANI and TiO2 were coated onto different indium tin oxide (ITO) glass plates by using a drop-casting method and sandwich attached for simple solar cell preparation. PT4 sample was the optimum solar cell with 0.2: 0.2 g of PANI: TiO2 ratio under 2 cm2 surface area based on the highest voltage produces from 100 mW cm-1 of light intensity metal highlight lamp. No voltage was
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33

Tischler, Dirk, Dirk Eulberg, Silvia Lakner, Stefan R. Kaschabek, Willem J. H. van Berkel, and Michael Schlömann. "Identification of a Novel Self-Sufficient Styrene Monooxygenase from Rhodococcus opacus 1CP." Journal of Bacteriology 191, no. 15 (2009): 4996–5009. http://dx.doi.org/10.1128/jb.00307-09.

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ABSTRACT Sequence analysis of a 9-kb genomic fragment of the actinobacterium Rhodococcus opacus 1CP led to identification of an open reading frame encoding a novel fusion protein, StyA2B, with a putative function in styrene metabolism via styrene oxide and phenylacetic acid. Gene cluster analysis indicated that the highly related fusion proteins of Nocardia farcinica IFM10152 and Arthrobacter aurescens TC1 are involved in a similar physiological process. Whereas 413 amino acids of the N terminus of StyA2B are highly similar to those of the oxygenases of two-component styrene monooxygenases (SM
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34

Sanz, Ana M., Pilar Navarro, Fernando Gomez-Contreras, Mercedes Pardo, Gèrard Pèpe, and André Samat. "A new diaza heteroaromatic crown of 3,5-disubstituted 1H-pyrazole which forms solid dinuclear complexes with lipophilic phenethylamines." Canadian Journal of Chemistry 76, no. 8 (1998): 1174–79. http://dx.doi.org/10.1139/v98-117.

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The cyclic stannoxane obtained from N-methyldiethanolamine and dibutyltin oxide reacts with 1H-pyrazole-3,5-dicarbonyl dichloride to afford the new 26-membered diaza tetraester crown 3. In neutral medium, the above crown forms 1:2 solid dinuclear complexes with phenethylamine (3a) and homoveratrylamine (3b), which, after crystallization from acetonitrile, were isolated in high yield (90% and 85%, respectively). The 3, 3a, and 3b structures were identified from their analytical and spectroscopic (1H, 13C NMR, and MS (FAB)) data. The spectroscopic properties of 3a and 3b are demonstrating that,
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Haduch, Anna, Ewa Bromek, Wojciech Kuban, and Władysława Anna Daniel. "The Engagement of Cytochrome P450 Enzymes in Tryptophan Metabolism." Metabolites 13, no. 5 (2023): 629. http://dx.doi.org/10.3390/metabo13050629.

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Tryptophan is metabolized along three main metabolic pathways, namely the kynurenine, serotonin and indole pathways. The majority of tryptophan is transformed via the kynurenine pathway, catalyzed by tryptophan-2,3-dioxygenase or indoleamine-2,3-dioxygenase, leading to neuroprotective kynurenic acid or neurotoxic quinolinic acid. Serotonin synthesized by tryptophan hydroxylase, and aromatic L-amino acid decarboxylase enters the metabolic cycle: serotonin → N-acetylserotonin → melatonin → 5-methoxytryptamine→serotonin. Recent studies indicate that serotonin can also be synthesized by cytochrome
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36

Bujan, Elba I., A. Irene Canas, and Rita H. de Rossi. "ChemInform Abstract: Amines as Leaving Groups in Nucleophilic Aromatic Substitution Reactions. Part 5. Substitution vs. N-Oxide Formation in the Reaction of N-n-Butyl-2,6-dinitroaniline with Hydroxide Ions." ChemInform 33, no. 8 (2010): no. http://dx.doi.org/10.1002/chin.200208085.

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37

Kupka, Anna, Hermann Gies, and Klaus Merz. "Influence on Crystallisation Process of Amino Acids from Solution." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C546. http://dx.doi.org/10.1107/s2053273314094534.

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The famous Miller experiment to model the primordial soup demonstrated that amino acids can form spontaneously as the essential building blocks of life in solutions. It is, however, still an open question how self-recognition processes influence the transformation of these spontaneously formed amino acids in solvents into higher ordered structures in the solid state, thereby creating chiral materials and catalytically competent structures. The understanding of the first steps of molecular self-assembly processes in such environments will thus give important clues towards the understanding of b
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38

Machado, Alexandra M., Marília Antunes, Maria Graça Miguel, Miguel Vilas-Boas, and Ana Cristina Figueiredo. "Volatile Profile of Portuguese Monofloral Honeys: Significance in Botanical Origin Determination." Molecules 26, no. 16 (2021): 4970. http://dx.doi.org/10.3390/molecules26164970.

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The volatile profiles of 51 samples from 12 monofloral-labelled Portuguese honey types were assessed. Honeys of bell heather, carob tree, chestnut, eucalyptus, incense, lavender, orange, rape, raspberry, rosemary, sunflower and strawberry tree were collected from several regions from mainland Portugal and from the Azores Islands. When available, the corresponding flower volatiles were comparatively evaluated. Honey volatiles were isolated using two different extraction methods, solid-phase microextraction (SPME) and hydrodistillation (HD), with HD proving to be more effective in the number of
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Sangula, Vara Satish, and Paul Douglas Sanasi. "Green Synthesis of N-Aryl, 2-(Chloroquinoline)-4-Thiazolidinone Derivatives using Magnetically Separable Copper Oxide Nano Particles and their Anti-Cancer Activity Studies." Research Journal of Chemistry and Environment 27, no. 12 (2023): 12–23. http://dx.doi.org/10.25303/2712rjce012023.

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Multi-component one-pot synthesis of biologically active heterocyclic compounds has been prevailing as a potential methodology to meet the therapeutic requirements of the pharmaceutical industry. On this background, a facile one-pot green synthesis of Nsubstitutedaryl- 2-(chloroquinoline)-4-thiazolidinone derivatives (4a-h) was conducted with a mixture of 2- chloroquinoline-3-carbaldehyde (1), thioglycolic acid (2) and various aromatic amines (3a-h). The reaction involved cyclo-condensation mechanism catalyzed by the synthesized CuO NPs which were obtained through hydrothermal method. These NP
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40

Heianza, Yoriko, Dianjianyi Sun, Xiang Li, et al. "Gut microbiota metabolites, amino acid metabolites and improvements in insulin sensitivity and glucose metabolism: the POUNDS Lost trial." Gut 68, no. 2 (2018): 263–70. http://dx.doi.org/10.1136/gutjnl-2018-316155.

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ObjectiveAlterations in gut microbiota have been linked to host insulin resistance, diabetes and impaired amino acid metabolism. We investigated whether changes in gut microbiota-dependent metabolite of trimethylamine N-oxide (TMAO) and its nutrient precursors (choline and L-carnitine) were associated with improvements in glucose metabolism and diabetes-related amino acids in a weight-loss diet intervention.DesignWe included 504 overweight and obese adults who were randomly assigned to one of four energy-reduced diets varying in macronutrient intake. The 6-month changes (Δ) in TMAO, choline an
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Spanou, Loukia, Aikaterini Dimou, Christina E. Kostara, Eleni Bairaktari, Eleni Anastasiou, and Vasilis Tsimihodimos. "A Study of the Metabolic Pathways Affected by Gestational Diabetes Mellitus: Comparison with Type 2 Diabetes." Diagnostics 12, no. 11 (2022): 2881. http://dx.doi.org/10.3390/diagnostics12112881.

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Background: Gestational diabetes mellitus (GDM) remains incompletely understood and increases the risk of developing Diabetes mellitus type 2 (DM2). Metabolomics provides insights etiology and pathogenesis of disease and discovery biomarkers for accurate detection. Nuclear magnetic resonance (NMR) spectroscopy is a key platform defining metabolic signatures in intact serum/plasma. In the present study, we used NMR-based analysis of macromolecules free-serum to accurately characterize the altered metabolic pathways of GDM and assessing their similarities to DM2. Our findings could contribute to
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Sangeetha., K.R. "STUDIES ON THE INTERACTION OF HYDRAZINE AND ASPARTIC ACID TOWARDS SOME TRANSITION METALS AND THEIR BIOLOGICAL ACTIVITIES." International Journal of Education &Applied Sciences Research 3, no. 7 (2016): 25–36. https://doi.org/10.5281/zenodo.10700175.

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<strong>Abstract </strong> <strong>Objective -</strong> <em>Literature survey indicates that hydrazine the simplest diamine, is known to form fairly stable complexes with mineral and carboxylic acids. Among the different substituted dicarboxylic acids, the potential tridentate &alpha;-amino dicarboxylic acid such as aspartic acid has been found to exhibit a strong interaction towards metal ions. Though the interaction of aspartic acid with aromatic amines, imidazole, bipyridine and phenanthroline towards various metals has been well studied, the studies with simple diamine, hydrazine with the
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43

Ferdinand Sanou, Sibiri, Amian Brise Benjamin Kassi, Philatryho Atché, and Yaya Soro. "Study of the Chemical Constituents of the Hydroethanolic Extract of the Leaves of Lippia Multiflora Moldenke (Verbenaceae)." Academic Journal of Chemistry, no. 101 (February 17, 2025): 1–20. https://doi.org/10.32861/ajc.101.1.20.

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Lippia multiflora is an aromatic plant used in traditional medicine for its extracts (volatile and non-volatile) rich in bioactive molecules. In Africa, the infusion or decoction of the leaves is used orally to treat bronchial conditions. The objective of this study is to identify the phytochemical compounds present in the leaves of L. multiflora. The dichloromethane fraction, resulting from the hydroalcoholic extract, was obtained by maceration of the crushed dried leaves in an ethanol/water mixture (70/30: v/v) followed by liquid-liquid fractionations. After the phytochemical screening, the
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44

Melnychuk, I.O., and V.H. Lyzogub. "Plasma amino acids spectrum as an important part of metabolomic pattern in patients with coronary artery disease and atrial fibrillation." Medicni perspektivi 28, no. 4 (2023): 13–22. https://doi.org/10.26641/2307-0404.2023.4.293976.

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The aim of our work was to estimate the plasma amino acid (AA) spectrum peculiarities in coronary artery disease (CAD) patients with atrial fibrillation (AF) and to check their connections with cardiometabolic risk factors and gu, microbiota metabolites. 300 patients were divided into three groups: first &ndash; 149 patients with CAD but without arrhythmias, second &ndash; 123 patients with CAD and AF paroxysm and control group &ndash; 28 patients without CAD and arrhythmias. Plasma AA level was detected by ion exchange liquid column chro&shy;matography method. The plasma AA spectrum changes i
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45

Latypova, Adele R., Maxim D. Lebedev, Ilya A. Tarasyuk, et al. "Sol-Gel Synthesis of Organically Modified Silica Particles as Efficient Palladium Catalyst Supports to Perform Hydrogenation Process." Catalysts 11, no. 10 (2021): 1175. http://dx.doi.org/10.3390/catal11101175.

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Modern approaches to the production of new materials require the improvement of synthesis techniques towards simplifying the processes of their preparation and reducing the number of stages. Thus, in this study, one-stage synthesis of organomodified silica materials is developed using a special surfactant—dodecyldimethylamin N-oxide (DDAO). The peculiarity of this approach is that there is no need for heat treatment of the material, since DDAO is removed by washing in alcohol. Amino-, mercapto-, methyl-, and phenyl-modified silicas were synthesized using this method. The SEM images showed the
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46

Kurdanova, Zhanna I., Kamila T. Shakhmurzova, Azamat A. Zhansitov, Arthur E. Baykaziev, Karina Kh Teunova, and Svetlana Yu Khashirova. "METHODS FOR SYNTHESIS OF POLYETHERIMIDES." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, no. 6 (2019): 4–14. http://dx.doi.org/10.6060/ivkkt.20196206.5892.

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The review summarizes and systematizes the currently known data on the synthesis of polyetherimides. Polyetherimides are a promising class of high-quality polymeric materials with a valua-ble set of properties that can be directed to the appropriate design of the polymer chain. Thus, to obtain polyetherimide with a lower glass transition temperature, as much as possible of ether bonds are introduced into the macromolecule, as well as m-phenylene fragments that increase the flexibility of the polymer chain. Polyetherimides of this structure are amorphous and soluble in a number of amide solvent
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47

Reszka, Przemysław, Karen Methling, Michael Lalk, Zhou Xiao, Klaus Weisz, and Patrick J. Bednarski. "Control of aspartate epimerization during the coupling of caspase specific tetrapeptides with aromatic amines by using N-[[(dimethylamino)-1H-1,2,3-triazolo[4,5-b]-pyridin-1-yl]methylene]-N-methylmethanaminium hexafluorophosphate N-oxide (HATU) as a coupling reagent." Tetrahedron: Asymmetry 19, no. 1 (2008): 49–59. http://dx.doi.org/10.1016/j.tetasy.2007.11.036.

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48

Gushchin, A., and V. Vakhitov. "The use of organoelement compounds of some elements of groups III, V and peroxides in the synthesis of organic compounds and polymers. In memory of professor V.A. Dodonov." Bulletin of the South Ural State University series "Chemistry" 15, no. 1 (2023): 9–16. http://dx.doi.org/10.14529/chem230101.

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Professor Viktor Alekseevich Dodonov (11.07.1933 – 27.09.2021) was the Head of the Department of Organic Chemistry of the Chemical Faculty of Lobachevsky State University of Nizhny Novgorod from 1971 to 2016. He was an Honored Scientist of the Russian Federation, full member of the Academy of Engineering Sciences of the Russian Federation, Fulbright Professor, the author of 42 patents, 500 scientific articles, the Head of the Scientific and Pedagogical school “Organic and organoelement chemistry: radical reactions in the liquid phase”. He synthesized new classes of organic and organoelement pe
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49

Lépine, Gaïa, Hélène Fouillet, Didier Rémond, Jean-François Huneau, François Mariotti, and Sergio Polakof. "A Scoping Review: Metabolomics Signatures Associated With Animal or Plant Protein Intake and Their Potential Relation to Cardiometabolic Risk." Current Developments in Nutrition 5, Supplement_2 (2021): 509. http://dx.doi.org/10.1093/cdn/nzab041_024.

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Abstract Objectives The dietary shift from animal protein (AP) sources to plant protein (PP) sources is promoted for both environmental and health reasons. Indeed, PP are associated to lower cardiovascular and diabetes risks compared to AP, but the underlying mechanisms remain mostly unknown. Metabolomics, which has a unique ability to provide an integrative snapshot of the metabolic status of an individual, is a valuable tool to investigate the different metabolic pathways activated by AP or PP intake and to provide biomarkers of their metabolic effects. This scoping review aimed at gathering
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50

Lefedova, Olga V., and Marina P. Nemtseva. "EFFECT OF SOLVENT COMPOSITION ON THE RATE AND SELECTIVITY OF 2-NITRO-2’-HYDROXY-5’-METHYLAZOBENZENE HYDROGENATION ON PROMOTED NICKEL CATALYSTS." ChemChemTech 68, no. 5 (2025): 101–11. https://doi.org/10.6060/ivkkt.20256805.7116.

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The study of the influence of various factors on the kinetic characteristics and selectivity of liquid-phase catalytic hydrogenation of compounds containing several reactive groups is of theoretical and practical significance. In the presented work, the hydrogenation of 2-nitro-2'-hydroxy-5'-methylazobenzene was studied in order to elucidate the reasons and nature of the dependence of the rate and yield of the target products containing the benzotriazole ring on the composition of the catalytic system. In particular, the influence of the composition of aqueous solutions of 2-propanol with diff
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