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Journal articles on the topic 'Nitroanilina'

Author: Grafiati

Published: 24 April 2022

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1

Diaz Prada, Wilberth Daniel, Héctor Fabio Cortes Hernández, and Jhon Alexander Rodriguez Espinosa. "Degradación fotocatalítica de la orto y meta-Nitroanilina en un reactor cilíndrico – parabólico compuesto." Entre ciencia e ingeniería 11, no. 22 (November 30, 2017): 95. http://dx.doi.org/10.31908/19098367.3554.

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2

Goryachkina, A. A., V. A. Ermokhin, and P. P. Purygin. "SYNTHESIS OF N-NITROPHENYL DERIVATIVES OF 1-ADAMANTYL-CONTAINED AMIDES." Vestnik of Samara University. Natural Science Series 18, no. 3.1 (June 7, 2017): 132–36. http://dx.doi.org/10.18287/2541-7525-2012-18-3.1-132-136.

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3

Deshmukh, Arundhati, Sujoy Bandyopadhyay, Anto James, and Abhijit Patra. "Trace level detection of nitroanilines using a solution processable fluorescent porous organic polymer." Journal of Materials Chemistry C 4, no. 20 (2016): 4427–33. http://dx.doi.org/10.1039/c6tc00599c.

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Sensitive detection of environmentally hazardous nitroanilines, especially p-nitroaniline in solution as well as in contact mode, was achieved employing a solution processable fluorescent porous organic polymer.

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4

Saldaña Corral, Eder Misael, Aided Vázquez Vázquez, Oscar García Barradas, Pilas Carranza Rosales, Susana López Cortina, Blanca Muñoz Flores, Victor Jiménez Perez, and Eugenio Hernández Fernández. "Síntesis y caracterización de a-amidofosfonatos: evaluación de su efecto tóxico sobreArtemiaSalina." Quimica Hoy 2, no. 3 (June 30, 2012): 8. http://dx.doi.org/10.29105/qh2.3-157.

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En este trabajo se describe la síntesis de nuevos u-amidofosfonatos, los cuales fueron preparados a partir de la (S)-fenilalanina, la 2-metil-5- nitroanilina y el 2-arninofenol. Las rutas sintéticas empleadas para la preparación de los compuestos presentan buenos rendimientos quhnicos. Las moléculas obtenidas fueron caracterizadas por RMN 1H y EM, fueron utilizadas para sintetizar un complejo de Sn(IV) y evaluar su efecto tóxico sobreArtemia Salina. Aún cuando se puede sintetizar exitosamente el complejo de estaño, las pruebas biológicas y su posible aplicación terapéutica está limitada por la alta inestabilidad a temperatura ambiente. El ensayo en A. salina permitió realizar untamizaje adecuado descartando diversos compuestos y focalizando la atención en los que tuvieron mejor capacidad tóxica. Los amidofosfonatos 12 y 13 muestran datos prometedores, por lo cual se proponen como candidatos para estudiar su actividad sobre cultivos de células de origen neoplásico y sobre células normales.

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5

Gaviria, Guillermo H., Izabela Dobrosz-Gómez, and Miguel-Ángel Gómez. "Análisis de la Sensibilidad Paramétrica de la Síntesis de o-Nitroanilina en un Reactor Batch Industrial." Información tecnológica 30, no. 1 (February 2019): 15–22. http://dx.doi.org/10.4067/s0718-07642019000100015.

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6

Sundari, V., G. Nagarajan, S. Gurumurthy, and R. Valliappan. "Synthesis, Characterization and Biological Activities of 3,5-Diaryltetrahydro-N-[(phenylamino)methyl]-1,4-thiazine-1,1-dioxide." E-Journal of Chemistry 6, no. 1 (2009): 177–82. http://dx.doi.org/10.1155/2009/254747.

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Synthesis of 3,5-diaryltetrahydro-N- [(4’-nitroanilino)methyl-thiazine-1,1-dioxide andN-[(4’-methylanilino)methyl-]-1,4-thiazine-1,1-dioxides by condensing 3,5-diaryl-tetrahydro-1,4-thiazine-1,1-dioxide with formaldehyde and 4-nitroaniline/4-methylaniline in the presence of hydrochloric acid is reported. The structures of the synthesized compounds have been confirmed by elemental and spectral analysis. The preliminary screening of the compounds for their biological activities gives significant results

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7

Pankratov, Alexei, and Inna Uchaeva. "Protonation site for anilines in aqueous media." Journal of the Serbian Chemical Society 67, no. 2 (2002): 111–13. http://dx.doi.org/10.2298/jsc0202111p.

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By means of the PM3 method it has been shown that the protonation of 2-, 3 4-methoxyanilines, 4-methylthioaniline, 2-, 3-, 4-aminobenzoic acids, 2 3-, 4-nitroanilines in the gaseous phase proceeds via the amine nitrogen atom. The same result, attributed to the aqueous medium, was obtained for 4-methoxyaniline, 4-aminobenzoic acid and 4-nitroaniline.

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8

Ruiz, Luis, Dan Vivas Ruiz, Fanny Lazo, Wolfram Seifert, Edith Rodríguez, Gustavo Sandoval, and Armando Yarlequé. "PURIFICACIÓN Y CARACTERIZACIÓN BIOQUÍMICA DE LA ENZIMA SIMILAR A TROMBINA DEL VENENO DE LA SERPIENTE Bothrops brazili." Revista de la Sociedad Química del Perú 83, no. 4 (December 31, 2017): 463–74. http://dx.doi.org/10.37761/rsqp.v83i4.218.

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Se ha purificado una enzima coagulante del veneno de la serpiente Bothrops brazili denominada enzima similar a trombina (TLE) mediante tres pasos cromatográficos sucesivos sobre Sephadex G-75, DEAE Sephadex A-50 y Sephadex G-50, empleando buffer Tris-HCl 0,05 M pH 8,5. La enzima fue purificada 15,9 veces con un rendimiento del 28,6 % y por PAGE-SDS se obtuvo una sola banda proteica de 48 kDa, tanto en condiciones reductoras como no reductoras usando 2β-Mercaptoetanol. Se trata de una proteína con actividad coagulante, tanto sobre plasma humano citratado como sobre fibrinógeno bovino. La enzima mostró actividad amidolítica sobre el sustrato cromogénico Benzoil-Arginil-p-Nitroanilina (BApNA) y la potencia coagulante sobre el fibrinógeno bovino fue calculada en 121 unidades NIH de trombina/mg. La enzima fue inhibida por PMSF y por el inhibidor de tripsina de soya, por lo que se trata de una serinoproteasa; el pH óptimo para la actividad amidolítica fue de 8,5 y la proteína fue estable al tratamiento térmico solo hasta los 40 ºC. La dosis defibrinogenante mínima fue 8 μg/g de ratón y mediante pruebas de inmunodifusión doble se observó inmunorreactividad con respecto al suero antibotrópico polivalente del INS.

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9

Ishida, Kirara, Yushi Nakamura, Tetsuo Ohta, and Yohei Oe. "A Molecular Probe with Both Chromogenic and Fluorescent Units for Detecting Serine Proteases." Molecules 26, no. 2 (January 18, 2021): 482. http://dx.doi.org/10.3390/molecules26020482.

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A molecular probe with l-phenylalanine p-nitroanilide and l-lysin 4-methylcoumaryl-7-amide, in which these amino acid derivatives are connected through a succinic-acid spacer, was prepared. Trypsin and papain were detected by blue-fluorescence emission of generated 7-amino-4-methylcoumarin (AMC). α-Chymotrypsin and nattokinase were detected from both the blue-fluorescence emission of AMC and the UV absorbance of p-nitroaniline. In addition, different time courses of p-nitroaniline and AMC were observed between the reaction of P1 with α-chymotrypsin and that with nattokinase. In the case of nattokinase, both the fluorescence emission and UV absorbance slowly increased. In contrast, the increasing UV absorbance was saturated at the early stage of the reaction of the present probe with chymotrypsin, whereas the fluorescence emission continuously increased in the following stages.

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10

Blahovec, Ján, Michal Bartík, and Evžen Kasafírek. "Isolation and partial characterization of bovine liver aminopeptidase B." Collection of Czechoslovak Chemical Communications 50, no. 5 (1985): 1249–57. http://dx.doi.org/10.1135/cccc19851249.

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Aminopeptidase B, specifically hydrolyzing the L-lysine and L-arginine derivatives of p-nitroaniline and β-naphthylamine, was isolated from bovine liver. A multistep purification procedure involving fractionation with ammonium sulfate, gel filtration on Sephadex, ion exchange chromatography on Ecteola-cellulose, and adsorption chromatography on hydroxylapatite, afforded an enzyme whose activity was approximately 240 times higher than the activity of the original material. The molecular weight of the enzyme determined by gel filtration on Sephadex G-200 was approximately 55 000. The Michaelis constant with respect to L-lysyl-p-nitroanilide was 1.2 . 10-3 mol/l.

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11

Ellena, J., G. Punte, and B. E. Rivero. "Conformational studies of substituted nitroanilines: geometry of 2-methyl-5-nitroaniline." Journal of Chemical Crystallography 26, no. 5 (May 1996): 319–24. http://dx.doi.org/10.1007/bf01677094.

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12

Cattana, Rosa, Juana J. Silber, and Jorge Anunziata. "Dielectric enrichment in binary solvent mixtures. The intramolecular hydrogen bond in N-alkyl-substituted o-nitroanilines. Substituent effects." Canadian Journal of Chemistry 70, no. 10 (October 1, 1992): 2677–82. http://dx.doi.org/10.1139/v92-337.

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In this work we report solvatochromism studies on o-nitroaniline and several N-alkyl-o-nitroaniline derivatives used as solutes in solvent mixtures of an "inert" nonpolar cosolvent, cyclohexane, and THF as a solvent with hydrogen bond acceptor ability. These studies allowed us to establish the competition between inter- and intramolecular hydrogen bond in solutes. This was done by comparing the magnitude of the local inhomogeneity induced by the solute-in-solvent mixture, that is, "preferential solvation," using Suppan's dielectric enrichment model as modified by us to be applied to electronic transitions. Since preferential solvation accounts for dielectric as well as specific interactions while dielectric enrichment only for the former, it was shown by comparison that it is possible to separate both effects and even quantify them. It was deduced that N-alkyl-o-nitroanilines form a strong intramolecular hydrogen bond, which remains unbroken even in polar solvents and hydrogen bond acceptors such as dimethyl sulfoxide. This was also confirmed by solvatochromic studies in pure solvents. On the other hand, a symmetrical dependence of the effects of alkyl substituents and solvents on the shifts of the absorption spectra was observed.

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13

Goeta, Andrés E., Chick C. Wilson, Juan C. Autino, Javier Ellena, and Graciela Punte. "Hydrogen Bonding in Nitroanilines: Neutron Diffraction Study ofm-Nitroaniline at 100 K." Chemistry of Materials 12, no. 11 (November 2000): 3342–46. http://dx.doi.org/10.1021/cm001092u.

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14

Torres Grisales, Yennifer, Diana Victoria Melo Sabogal, Laura Sofía Torres-Valenzuela, Johanna Andrea Serna-Jiménez, and Alejandra Sanín Villarreal. "Evaluation of bioactive compounds with functional interest from yellow pitahaya (Selenicereus megalanthus Haw)." Revista Facultad Nacional de Agronomía 70, no. 3 (September 1, 2017): 8311–18. http://dx.doi.org/10.15446/rfna.v70n3.66330.

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La pitahaya amarilla es una fruta exótica, catalogada por la Corporación Internacional Colombiana como una fruta promisoria para la exportación, debido a sus atributos sensoriales y organolépticos. Además, esta fruta ha sido asociada al control del estreñimiento, y con beneficios para la salud, gracias a su contenido de antioxidantes. Por consiguiente, el propósito de este trabajo fue evaluar las propiedades químicas y los biocomponentes presentes en tallo, cáscara, semilla y pulpa de pitahaya amarilla. La determinación de polifenoles se realizó siguiendo el método de Folin-Ciocalteu; el contenido de vitamina C por el método de 2-nitroanilina; la capacidad antioxidante se determinó por los métodos ABTS y DPPH; y la aceleración del peristaltismo mediante la medición de heces en biomodelos (hámsteres dorados), alimentados con diferentes partes de esta fruta. Los resultados demostraron que la composición de la fruta varía de acuerdo a sus partes. Es de destacar que todas las partes de la fruta contienen compuestos bioactivos en diferentes concentraciones; la concentración más alta de vitamina C, polifenoles y capacidad antioxidante se encontró en la semilla (22,08 mg ácido ascórbico por g materia seca, 1580 mg ácido gálico por 100 g materia seca, 79,2±0,2% ABTS, respectivamente) y cáscara (20,615 mg ácido ascórbico por g materia seca, 1333,33 mg ácido gálico por 100 g materia seca, 66,2±0,8% ABTS, respectivamente); respecto a la aceleración del peristaltismo, la producción de heces incrementó al consumir semillas de pitahaya. De acuerdo a lo anterior, se concluye que la pitahaya amarilla podría ser una alternativa de un producto promisorio, debido a su composición y contenido de compuestos bioactivos de interés funcional.

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15

Garden, Simon J., James L. Wardell, Janet M. S. Skakle, John N. Low, and Christopher Glidewell. "Hydrogen bonding in substituted nitroanilines: hydrogen-bonded sheets in 4-iodo-3-nitroaniline." Acta Crystallographica Section C Crystal Structure Communications 60, no. 5 (April 9, 2004): o328—o330. http://dx.doi.org/10.1107/s0108270104006092.

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16

Fantoni, Adolfo C., C. Gustavo Pozzi, and Graciela Punte. "On the Electron Density Topology and Electrostatic Properties of Nitroanilines. A Theoretical Investigation onm-Nitroaniline and 2-Methyl-5-nitroaniline Crystals." Journal of Physical Chemistry A 113, no. 34 (August 27, 2009): 9527–32. http://dx.doi.org/10.1021/jp904318q.

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17

Pozzi, C. G., A. C. Fantoni, G. Punte, and A. E. Goeta. "Role of the hydrogen bonds in nitroanilines′ aggregation: Charge density study of m-nitroaniline." Chemical Physics 358, no. 1-2 (March 2009): 68–74. http://dx.doi.org/10.1016/j.chemphys.2008.12.020.

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18

Ferguson, George, Christopher Glidewell, John N. Low, Janet M. S. Skakle, and James L. Wardell. "Hydrogen bonding inC-methylated nitroanilines: the three-dimensional framework structure of 2-methyl-4-nitroaniline." Acta Crystallographica Section C Crystal Structure Communications 57, no. 3 (March 15, 2001): 315–16. http://dx.doi.org/10.1107/s0108270100019405.

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19

Glidewell, Christopher, John N. Low, Janet M. S. Skakle, and James L. Wardell. "Hydrogen bonding in C-substituted nitroanilines: simpleC(8) chains in 2-bromo-6-chloro-4-nitroaniline." Acta Crystallographica Section C Crystal Structure Communications 61, no. 5 (April 30, 2005): o336—o338. http://dx.doi.org/10.1107/s0108270105010085.

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20

Ellena, Javier, Andrés E. Goeta, Judith A. K. Howard, and Graciela Punte. "Role of the Hydrogen Bonds in Nitroanilines Aggregation: Charge Density Study of 2-Methyl-5-nitroaniline." Journal of Physical Chemistry A 105, no. 38 (September 2001): 8696–708. http://dx.doi.org/10.1021/jp010688h.

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21

Zborowski, Krzysztof K., Halina Szatyłowicz, and Tadeusz M. Krygowski. "Solvent influence on intramolecular interactions and aromaticity in meta and para nitroanilines." Structural Chemistry 31, no. 5 (July 6, 2020): 1717–28. http://dx.doi.org/10.1007/s11224-020-01582-0.

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Abstract Theoretical density functional theory (B3LYP/6-31G**) was used to study the intra- and intermolecular interactions of nitrobenzene, aniline, and meta and para nitroaniline in various solvation models. The studied molecules were solvated by one or two water molecules in the presence of continuum solvation (the PCM model) or without it. Finally, the studied molecules were surrounded by a cluster of water molecules. For comparison, calculations were also made for separated molecules. Geometries, energies, hydrogen bonding between solutes and solvent molecules, atomic charges, and aromaticity were examined. The analysis was based on the Atoms in Molecules methodology and the Harmonic Oscillator Model of Aromaticity (HOMA) index. As a result, an extensive description of the solvation of nitro and amino groups and the effect of solvation on mutual interactions between these groups in meta and para nitroanilines is provided. It was found that in general, the PCM description of the hydration effect on the electronic structure of the studied systems (substituents) is consistent with the approach taking into account all individual interactions (cluster model).

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22

Costa, Alexandra I., Patrícia D. Barata, Bianca Moraes, and José V. Prata. "Carbon Dots from Coffee Grounds: Synthesis, Characterization, and Detection of Noxious Nitroanilines." Chemosensors 10, no. 3 (March 15, 2022): 113. http://dx.doi.org/10.3390/chemosensors10030113.

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Coffee ground (CG) waste is generated in huge amounts all over the world, constituting a serious environmental issue owing to its low biodegradability. Therefore, processes that simultaneously aim for its valorization while reducing its environmental impact are in great demand. In the current approach, blue luminescent carbon dots (C-dots) were produced in good chemical yields from CGs following hydrothermal carbonization methods under an extended set of reaction parameters. The remarkable fluorescent properties of the synthesized C-dots (quantum yields up to 0.18) allied to their excellent water dispersibility and photostability prompted their use for the first time as sensing elements for detection of noxious nitroanilines (NAs) in aqueous media. Very high levels of NA detection were achieved (e.g., limit of detection of 68 ppb for p-nitroaniline), being the regioisomeric selectivity attributed to its higher hyperpolarizability and dipole moment. Through ground–state and time-resolved fluorescence assays, a static fluorescence quenching mechanism was established. 1H NMR titration data also strongly suggested the formation of ground–state complexes between C-dots and NAs.

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23

Praveen Kumar D. G., Kalleshappa C.M.,, Amarnath P. C. &. Shashikala K. J. "Bagasse Fly Ash as an Effective Adsorbent: Evaluation of Adsorptive Characteristics for 4-Nitroaniline Removal." International Journal for Modern Trends in Science and Technology 7, no. 05 (May 27, 2021): 155–61. http://dx.doi.org/10.46501/ijmtst0705026.

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In the present study we explored the adsorptive characteristics of 4-nitroaniline from synthetic aqueous solution onto bagasse fly ash (BFA). Batch experiments were carried out to determine the influence of parameters like initial pH (pH0), adsorbent dose (m), contact time (t) and initial concentration (C0) on the removal of 4-nitroaniline. The maximum removal of 4-nitroaniline was determined to be 98% at lower concentrations (50 mg/L) and 41% at higher concentrations (300 mg/L), using a BFA dosage of 10 g/L at 303K. Kinetic study of 4-nitroaniline removal by BFA was well represented by pseudo second-order kinetic model. The 4-nitroaniline desorption from 4-nitroaniline loaded BFA shows that only 27% and 36% of 4-nitroaniline could be recovered using ethyl alcohol and acetone respectively.

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24

Zakaria, Choudhury M., John N. Low, Janet M. S. Skakle, Susan A. McWilliam, James L. Wardell, and Christopher Glidewell. "Hydrogen bonding inC-methylated nitroanilines: a room-temperature monoclinic polymorph of 4-methyl-3-nitroaniline withZ′ = 2." Acta Crystallographica Section C Crystal Structure Communications 57, no. 10 (October 12, 2001): 1207–8. http://dx.doi.org/10.1107/s0108270101012185.

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25

Kruszynski, Rafal, and Tomasz Sieranski. "The intermolecular interactions in the aminonitromethylbenzenes." Open Chemistry 9, no. 1 (February 1, 2011): 94–105. http://dx.doi.org/10.2478/s11532-010-0118-8.

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AbstractThe intermolecular non-covalent interactions in aminonitromethylbenzenes namely 2-methyl-4-nitroaniline, 4-methyl-3-nitroaniline, 2-methyl-6-nitroaniline, 4-amino-2,6-dinitrotoluene, 2-methyl-5-nitroaniline, 4-methyl-2-nitroaniline, 2,3-dimethyl-6-nitroaniline, 4,5-dimethyl-2-nitroaniline and 2-methyl-3,5-dinitroaniline were studied by quantum mechanical calculations at RHF/311++G(3df,2p) and B3LYP/311++G(3df,2p) level of theory. The calculations prove that solely geometrical study of hydrogen bonding can be very misleading because not all short distances (classified as hydrogen bonds on the basis of interaction geometry) are bonding in character. For studied compounds interaction energy ranges from 0.23 kcal mol−1 to 5.59 kcal mol−1. The creation of intermolecular hydrogen bonds leads to charge redistribution in donors and acceptors. The Natural Bonding Orbitals analysis shows that hydrogen bonds are created by transfer of electron density from the lone pair orbitals of the H-bond acceptor to the antibonding molecular orbitals of the H-bond donor and Rydberg orbitals of the hydrogen atom. The stacking interactions are the interactions of delocalized molecular π-orbitals of the one molecule with delocalized antibonding molecular π-orbitals and the antibonding molecular σ-orbital created between the carbon atoms of the second aromatic ring and vice versa.

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26

Steinkamp, Reinhard, and Heinz Rennenberg. "Degradation of Glutathione in Plant Cells: Evidence against the Participation of a γ-Glutamyltranspeptidase." Zeitschrift für Naturforschung C 40, no. 1-2 (February 1, 1985): 29–33. http://dx.doi.org/10.1515/znc-1985-1-208.

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When γ-glutamyltranspeptidase activity in tobacco cells was measured using the artificial substrate γ-glutamyl-p-nitroanilide, liberation of p-nitroaniline was not reduced, but stimulated by addition of glutathione. Therefore, glutathione was not acting as a donator, but as an acceptor of γ-glutamyl moieties in the assay mixture, suggesting that γ-glutamvltranspeptidase is not participating in degradation of glutathione. Feeding experiments with [35S-cys]glutathione supported this conclusion. When tobacco cells were supplied with this peptide as sole sulfur source, glutathione and γ-glutamylcysteine were the only labelled compounds found inside the cells. The low rate of uptake of glutathione apparently prevented the accumulation of measurable amounts of radioactivity in the cysteine pool. A γ-glutamylcyclotransferase, responsible for the conversion of γ-glutamylcysteine to 5-oxo-proline and cysteine was found in ammonium sulfate precipitates of tobacco cell homogenates. The enzyme showed high activities with γ-glutamylmethionine and γ-glutamylcysteine, but not with other γ-glutamyldipeptides or glutathione. From these and previously published experiments [(Rennenberg et a!., Z. Naturforsch. 35c, 708-711 (1980)], it is concluded that glutathione is degraded in tobacco cells via the following pathway: γ-glu-cys-gly → γ-glu-cys → 5-oxo-proline → glu.

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27

Liang, Yan Qiu, and Ying Zhang. "Interaction of 4-Nitroaniline with Serum Albumin." Applied Mechanics and Materials 522-524 (February 2014): 337–40. http://dx.doi.org/10.4028/www.scientific.net/amm.522-524.337.

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Bovine serum albumin (BSA) and human serum albumin (HSA) interaction with 4-nitroaniline was investigated by fluorescence spectroscopy respectively. 4-Nitroaniline can strongly quench intrinsic fluorescence of BSA and HSA. 4-Nitroaniline exhibits a high affinity to bovine and human serum albumins. The binding constantsKand the number binding sitenwere obtained by double-log regression equation. Negative enthalpy (ΔH) and positive entropy (ΔS) values indicated that both hydrogen bond and hydrophobic forces played a major role in the binding of 4-nitroaniline and SA. The results of synchronous fluorescence showed the polarity around tryptophan residues was decreased and the hydrophobicity was increased.

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28

Ge, Hui Lin, Shu Shen Liu, Hong Qiu Yuan, Gui Hao Yin, Yi Xie, and Ling Yun Mo. "Assessment and Prediction of Joint Toxicity of Aniline Derivatives." Applied Mechanics and Materials 448-453 (October 2013): 217–20. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.217.

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The joint toxicity of aniline, 2-methylaniline, 3-methylaniline, 4-methylaniline, 2-nitroaniline, 3-nitroaniline, 4-nitroaniline, 2-chloroaniline, 3-chloroaniline, and 4-chloroaniline on photobacterium were predicted and evaluated by using concentration addition (CA) and independent action (IA) models, and joint effect indices including toxic units, additive index, mixture toxicity index, and similarity parameter. The tested mixture presented synergism.

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29

Asaji, Tetsuo, and Alarich Weiss. "Pyroelectricity of Molecular Crystals: Benzene Derivatives." Zeitschrift für Naturforschung A 40, no. 6 (June 1, 1985): 567–74. http://dx.doi.org/10.1515/zna-1985-0607.

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The pyroelectric coefficient at constant stress was measured for meta-nitroaniline, meta-amino-phenol, and 2,3-dichlorophenol in the temperature range 90 Ù T/ K ⪅ % melting point. A change in sign of the pyroelectric coefficient was observed in meta-nitroaniline and 2,3-dichlorophenol. At room temperature p3s is 9 m Cm−2 K−1 for meta-nitroaniline, 42 m Cm−2 K−1 for meta-aminophenol, and 0.3 m Cm−2 K−1 for 2,3-dichlorophenol (at 263 K for the latter one). By a classical harmonic oscillator model the contribution to the pyroelectric coefficient due to molecular dipole librational motions was estimated to be fairly small for meta-nitroaniline. The temperature dependence of the coefficient of meta-nitroaniline is discussed on the basis of Boguslawski's theory. The importance of internal polar optical modes for the temperature dependence of the pyroelectric coefficient of molecular crystals is shown.

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30

Ge, Hui Lin, Shu Shen Liu, Jin Hui Luo, Qiong Fan, Yue Zhang, and Ling Yun Mo. "Predicting Mixture Toxicities of Aniline Derivatives on Photobacterium." Advanced Materials Research 807-809 (September 2013): 684–87. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.684.

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The low-dose and combined effects of aniline, 2-methylaniline, 3-methylaniline, 4-methylaniline, 2-nitroaniline, 3-nitroaniline, 4-nitroaniline, 2-chloroaniline, 3-chloroaniline, and 4-chloroaniline on photobacterium Vibrio qinghaiensis were predicted and evaluated by using concentration addition (CA) and independent action (IA) models. The mixtures effects can be predicted by CA and IA models, which indicate that aniline derivatives present additive toxicity.

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31

Howie, R. Alan, John N. Low, James L. Wardell, and Christopher Glidewell. "Hydrogen bonding in C-substituted nitroanilines: a chain ofR\bf{_3^3}(12) rings in 2-methanesulfonyl-4-nitroaniline." Acta Crystallographica Section C Crystal Structure Communications 60, no. 1 (December 20, 2003): o84—o86. http://dx.doi.org/10.1107/s0108270103027641.

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32

Kimura, Y., S. Ibaraki, R. Hirano, Y. Sugita, Y. Yasaka, and M. Ueno. "Photoexcitation dynamics of p-nitroaniline and N,N-dimethyl-p-nitroaniline in 1-alkyl-3-methylimidazolium-cation based ionic liquids with different alkyl-chain lengths." Physical Chemistry Chemical Physics 19, no. 33 (2017): 22161–68. http://dx.doi.org/10.1039/c7cp03610h.

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33

Huang, K. S., D. Britton, and M. C. Etter. "3-(3-Nitroanilino)cyclohex-2-en-1-one: an Unexpected Product from the Co-Crystallization of m-Nitroaniline with 1,3-Cyclohexanedione." Acta Crystallographica Section C Crystal Structure Communications 51, no. 8 (August 15, 1995): 1661–63. http://dx.doi.org/10.1107/s0108270195001740.

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34

Pappula, Venkatanarayana, and Subbarayappa Adimurthy. "Green process development for the preparation of 2,6-dibromo-4-nitroaniline from 4-nitroaniline using bromide–bromate salts in an aqueous acidic medium." RSC Advances 6, no. 93 (2016): 90184–87. http://dx.doi.org/10.1039/c6ra13680j.

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Organic solvent-free process for the preparation of 2,6-dibromo-4-nitroaniline, from 4-nitroaniline using 2 : 1 bromide–bromate salts under aqueous acidic medium at ambient conditions has been developed.

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35

Groff, J. L., J. B. Harp, and M. DiGirolamo. "Simplified enzymatic assay of angiotensin-converting enzyme in serum." Clinical Chemistry 39, no. 3 (March 1, 1993): 400–404. http://dx.doi.org/10.1093/clinchem/39.3.400.

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Abstract We report a simple, enzymatic method for determining angiotensin-converting enzyme (ACE; EC 3.4.15.1) in serum. The proposed method features coupling an established reaction catalyzed by gamma-glutamyltransferase (GGT; EC 2.3.2.2) to the ACE reaction, which releases glycylglycine from the artificial substrate hippuryl-glycyl-glycine. The glycyl-glycine released by the ACE reaction becomes rate-limiting in the GGT reaction, in which it participates as a receptor substrate for a gamma-glutamyl group transferred from a donor substrate, L-gamma-glutamyl-3-carboxy-4-nitroanilide. The reaction releases 3-carboxy-4-nitroaniline, which is monitored spectrophotometrically at 410 nm. The resulting rate of change in absorbance is linearly related to the glycyl-glycine concentration and therefore to the activity of ACE. The linear range of the method extends from ACE values < 50 to at least 1300 U/L of serum. Good precision is indicated by a low CV for replicate analyses (3.6% and 4.6% for within-run and day-to-day assays, respectively, for normal ACE activity, and 3.1% within-run for high ACE activity). Results also correlate well with those of an established colorimetric method (r = 0.978). The major advantages of the method are its procedural simplicity, limited cost, use of readily available reagents, applicability to isoenzyme studies, and adaptability to automation.

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36

Yadav, Homeshwari, and Prof S. A. Bhoite Prof. S. A. Bhoite. "Acid Catalyzed Hydrolysis of Di-2-Methoxy-4- Nitroaniline Phosphate." International Journal of Scientific Research 3, no. 6 (June 1, 2012): 63–65. http://dx.doi.org/10.15373/22778179/june2014/24.

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37

Glidewell, Christopher, John N. Low, Susan A. McWilliam, Janet M. S. Skakle, and James L. Wardell. "Hydrogen bonding in C-substituted nitroanilines: molecular ladders in 2-trifluoromethyl-4-nitroaniline and sheets ofR\bf{_4^4}(12) andR\bf{_4^4}(32) rings in 3-trifluoromethyl-4-nitroaniline." Acta Crystallographica Section C Crystal Structure Communications 58, no. 2 (January 23, 2002): o97—o99. http://dx.doi.org/10.1107/s0108270101021254.

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38

Lanez, Touhami, and Elhafnaoui Lanez. "A Molecular Docking Study of N-Ferrocenylmethylnitroanilines as Potential Anticancer Drugs." International Journal of Pharmacology, Phytochemistry and Ethnomedicine 2 (May 2016): 5–12. http://dx.doi.org/10.18052/www.scipress.com/ijppe.2.5.

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In the present study, the interaction of the protein structure of Escherichia coli DNA Gyrase-A (EcGyr-A) extracted from protein data bank (PDB Code: 1AB4) with ligands N-ferrocenylmethyl-2-nitroaniline (2FMNA), N-ferrocenylmethyl-3-nitroaniline (3FMNA) and N-ferrocenylmethyl-4-nitroaniline (4FMNA) were investigated by performing docking studies using the Molegro Virtual Docker (MVD) software. The results obtained showed that the best poses which is derived from MolDock score for Escherichia coli DNA Gyrase-A were respectively equal to-92.0111, -96.0866 and-95.6808 with reranking score equal to-40.9575, -73.4476 and-73.6423. Calculations revealed that 3FMNA react strongly with EcGyr-A followed by 4-FMNA and 2-FMNA.

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39

Zheng, Kai, Tong-chao Zhang, Pin Lin, Yu-hua Han, Hong-yi Li, Ren-jie Ji, and Hai-yun Zhang. "4-Nitroaniline Degradation by TiO2Catalyst Doping with Manganese." Journal of Chemistry 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/382376.

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Stainless steel anode covered with layer film of TiO2doped with manganese was utilized to decompose 4-nitroaniline in rectangular borosilicate glass reactor, while stainless steel mesh was chosen as cathode; the anode and cathode were connected to the direct-current power; meantime two 60 W (λmax= 365 nm) UV lamps were used as light source. The microstructures on TiO2before and after being doped with manganese were analyzed by energy disperse X-ray (EDX) and X-ray diffraction (XRD). The performance of degradation of 4-nitroaniline was evaluated by analyzing cracking ratio of 4-nitroaniline ring, the chemical oxygen demand (COD), and total organic carbon (TOC) in remaining solution. Monitored parameters during all the photocatalytic reaction including dissolved oxygen, direct voltage, and radiation dosage of ultraviolet rays were investigated. When dissolved oxygen concentration, direct voltage, and radiation dosage of ultraviolet rays were, respectively, equivalent to 9 mg/L, 24 V, and 1200 μW/cm2, the degradation ratio of 4-nitroaniline reached maximum. The experimental results indicated that cracking ratio of 4-nitroaniline ring and the removal ratio of COD and TOC were, respectively, more than 99%, 85%, and 80% when reaction was run for 10 hours. The values of COD and TOC were, respectively, less than 16 mg/L and 8 mg/L while the experiment was finished.

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40

Lemmerer, Andreas, and David G. Billing. "p-Nitroaniline hydrobromide." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (March 25, 2006): o1562—o1564. http://dx.doi.org/10.1107/s1600536806010166.

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The crystal stucture of p-nitroaniline hydrobromide, C6H7N2O2 +·Br− or O2NC6H4NH3 +·Br−, exhibits ionic layers separated by hydrocarbon layers. The hydrocarbon layers stack head-to-tail but no π–π interactions are observed. In the inorganic layer, the ammonium group, Br− anion and nitro group interact to form a three-dimensional hydrogen-bonded network. The structure is compared with that of the related compound O2NC6H4NH3 +·Cl−.

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41

Ellena, Javier, Andrés E. Goeta, Judith A. K. Howard, Chick C. Wilson, Juan C. Autino, and Graciela Punte. "Experimental evidence for the amino-group non-planarity in nitroanilines: neutron diffraction study of 2-methyl-5-nitroaniline at 100 K." Acta Crystallographica Section B Structural Science 55, no. 2 (April 1, 1999): 209–15. http://dx.doi.org/10.1107/s0108768198010349.

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An appreciable degree of pyramidalization of the amine N atom is observed in the title compound. The existence of polar chains, induced by N—H...O synthons, is confirmed. C—H...O interactions, not noted in a previous X-ray study, were found to stabilize further the known head-to-tail assembling of the chains. The structure can be described as non-polar (101) layers, embodying chains interlinked by centrosymmetric dimers, connected by C(aryl)—H...π interactions. The latter are not present in m-nitroaniline, 2-methyl-4-nitroaniline and other related compounds with chains built from similar N—H...O synthons and assembled head-to-head. This finding implies that an obvious relationship between molecular recognition patterns and crystal structures should not be assumed.

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42

Belghith, Yassine, Anissa Mansour, and Habib Nasri. "Crystal structure of bis(4-nitroaniline-κN1)(5,10,15,20-tetraphenylporphyrinato-κ4N)cobalt(III) chloride dichloromethane monosolvate." Acta Crystallographica Section E Structure Reports Online 70, no. 9 (August 1, 2014): m312—m313. http://dx.doi.org/10.1107/s1600536814016274.

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The reaction of [CoIII(TPP)Cl] (TPP is the dianion of 5,10,15,20-tetraphenylporphyrin) with an excess of 4-nitroaniline in dichloromethane leads to the title compound, [CoIII(C44H28N4)(C6H6N2O2)2]Cl·CH2Cl2. The CoIIIion lies on an inversion centre and is octahedrally coordinated by two N atoms of the NH2groups of the two 4-nitroanilinetrans-axial ligands and four pyrrole N atoms of the porphyrin. The asymmetric unit contains one half of the [CoIII(TPP)(4-nitroaniline)2]+ion complex, one chloride counter-ion (lying on a twofold rotation axis) and one half dichloromethane solvent molecule, where the C atom lies on a twofold rotation axis. The average equatorial Co—N(pyrrole) distance (Co—Np) is 1.982 (2) Å and the axial Co—N(4-nitroaniline) bond length is 2.006 (2) Å. The crystal packing is stabilized by an N—H...Cl hydrogen bond between the N atom of the amino group of the 4-nitroaniline axial ligand and the chloride counter-ion. The supramolecular architecture is further stabilized by weak C—H...π interactions.

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43

Wijaya, Karna, Iqmal Tahir, and Ahmad Baikuni. "THE SYNTHESIS OF Cr₂O₃-PILLARED MONTMORILLONITE (CrPM) AND ITS USAGE FOR HOST MATERIAL OF p-NITROANILINE." Indonesian Journal of Chemistry 2, no. 1 (June 5, 2010): 12–21. http://dx.doi.org/10.22146/ijc.21928.

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The synthesis of Cr2O3-pillared montmorillonite (CrPM) and its usage for host material of p-nitroaniline have been conducted. The Cr2O3-pillared montmorillonite clays was prepared by a direct ion exchange method. First, the polyhydroxychromium as a pillaring spesies was intercalated into the interlayer region of the montmorillonite clays (purified clay in the monocation form), result in a montmorillonite-polyoxychromium intercalation compound. The precursors/pillaring spesies was not stable, hence it must be stabilized by calcination in order to transform the polyoxychromium via dehydration and dehydroxylation processes into Cr2O3. This oxide constituts the so-called pillar that prop the clay layers apart to a relatively large distance. The Cr2O3-pillared clays as a host material was added into ethanol solution saturated with p-nitroaniline, and mixture was stirred for 24 h at room temperature. The Na-montmorillonite, Cr2O3-pillared clay and p-nitroaniline-Cr2O3-pillared clay (pNA-CrPM) were characterized by X-Ray Diffraction (XRD), Gas Sorption Analysis, Infrared Spectroscopy (FTIR) and Activated Neutron Analysis (ANA) methods. The result of research showed that basal spacing (d001) of Cr2O3-pillared montmorillonite (CrPM) was 18,55 Å, meanwhile the basal spacing of the hydrated Na-montmorillonite was 14,43 Å. The specific surface area of the Cr2O3-pillared montmorillonite was 174,308 m2/g, whereas p-nitroaniline-Cr2O3-pillared clay (pNA-CrPM) was 133,331641 m2/g. This fact indicated that p-nitroaniline has been included into the pore of the Cr2O3-pillared clay. Keyword: montmorillonite, pillared-clay, ion exchange, intercalate.

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44

Petersen, L. C., J. Brender, and E. Suenson. "Zymogen-activation kinetics. Modulatory effects of trans-4-(aminomethyl)cyclohexane-1-carboxylic acid and poly-d-lysine on plasminogen activation." Biochemical Journal 225, no. 1 (January 1, 1985): 149–58. http://dx.doi.org/10.1042/bj2250149.

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The kinetics of plasminogen activation catalysed by urokinase and tissue-type plasminogen activator were investigated. Kinetic measurements are performed by means of a specific chromogenic peptide substrate for plasmin, D-valyl-L-leucyl-L-lysine 4-nitroanilide. Two methods are proposed for the analysis of the resulting progress curve of nitroaniline formation in terms of zymogen-activation kinetics: a graphical transformation of the parabolic curve and transformation of the curve for nitroaniline production into a linear progress curve by the addition of a specific inhibitor of plasmin, bovine pancreatic trypsin inhibitor. The two methods give similar results, suggesting that the reaction between activator and plasminogen is a simple second-order reaction at least at plasminogen concentrations up to about 10 microM. The kinetics of both Glu1-plasminogen (residues 1-790) and Lys77-plasminogen (residues 77-790) activation were investigated. The results confirm previous observations showing that trans-4-(aminomethyl)cyclohexane-1-carboxylic acid at relatively low concentrations enhances the activation rate of Glu1-plasminogen but not that of Lys77-plasminogen. At higher concentrations both Glu1- and Lys77-plasminogen activation are inhibited. The concentration interval for the inhibition of urokinase-catalysed reactions is shown to be very different from that of the tissue-plasminogen activator system. Evidence is presented indicating that binding to the active site of urokinase (KD = 2.0 mM) is responsible for the inhibition of the urokinase system, binding to the active site of tissue-plasminogen activator is approx. 100-fold weaker, and inhibition of the tissue-plasminogen activator system, when monitored by plasmin activity, is mainly due to plasmin inhibition. Poly-D-lysine (Mr 160 000) causes a marked enhancement of plasminogen activation catalysed by tissue-plasminogen activator but not by urokinase. Bell-shaped curves of enhancement as a function of the logarithm of poly-D-lysine concentration are obtained for both Glu1- and Lys77-plasminogen activation, with a maximal effect at about 10 mg/litre. The enhancement of Glu1-plasminogen activation exerted by trans-4-(aminomethyl)cyclohexane-1-carboxylic acid is additive to that of poly-D-lysine, whereas poly-D-lysine-induced enhancement of Lys77-plasminogen activation is abolished by trans-4-(aminomethyl)cyclohexane-1-carboxylic acid. Analogies are drawn up between the effector functions of poly-D-lysine and fibrin on the catalytic activity of tissue-plasminogen activator.

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45

Yang, Ming, Qian Sun, and Cai Yun Li. "Preparation and Characterization of Molecularly Imprinted Polymer Microspheres of p-Nitroaniline." Applied Mechanics and Materials 71-78 (July 2011): 3411–14. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3411.

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Polystyrene microspheres were prepared by the emulsifier-free polymerization method. Using the polystyrene microspheres as seeds, p-nitroaniline as template molecules, the monodispersed molecularly imprinted polymer microspheres (MIPMs) were prepared by a single-step swelling and polymerization method. The monodispersed molecular imprinted polymers with porous structure were characterized by SEM, and UV-visible spectrophotometry. The adsorption performance of MIPMs for p-nitroaniline was investigated.

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46

Đaković, Marijana, Tomislav Portada, and Tin Klačić. "N-(4-Methylbenzyl)-3-nitroaniline." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (May 31, 2012): o1967. http://dx.doi.org/10.1107/s1600536812024348.

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In the title compound, C14H14N2O2, the angle between the mean plane of the N-methyl-3-nitroaniline system (r.m.s. deviation = 0.0185 Å) and the p-tolyl unit is 89.79 (4)°. In the crystal, hydrogen-bonded chains running along [10-1] are generated by the linking of neighbouring molecules via N—H...O and C—H...O hydrogen bonds involving the 3-nitroaniline systems and forming R 2 2(8) motifs.

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47

Gao, Jinzhang, Jing Liu, Jie Ren, Xiuli Niu, Yingying Zhang, and Wu Yang. "Determination of p-nitroaniline by the tartrate-acetone-Mn2+-KBrO3-H2SO4 double organic substrate oscillating system using non-equilibrium stationary state." Open Chemistry 7, no. 3 (September 1, 2009): 298–302. http://dx.doi.org/10.2478/s11532-009-0060-9.

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AbstractThis paper described the determination of p-nitroaniline in a double organic substrate oscillating system of tartrate-acetone-Mn2+-KBrO3-H2SO4. Under the optimum conditions, temperature was chosen as a control parameter to design the bifurcation point and proposed a convenient method for determination of p-nitroaniline. Results showed that the system consisting of 3.5 mL 0.06 mol L−1 tartrate, 4.0 mL 0.7 mol L−1 H2SO4, 1.5 mL 1.5×10−4 mol L−1 MnSO4, 4.0 mL 0.4 mol L−1 acetone and 7.0 mL 0.05 mol L−1 KBrO3 was very sensitive to the surrounding at 33.5°C. A good linear relationship between the potential difference and the negative logarithm concentration of p-nitroaniline was obtained to be in the range of 2.50×10−7∼3.75×10−5 mol L−1 with a lower detection limit of 2.50×10−8 mol L−1.

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48

Rahim, Oumelkheir, Abdelhamid Khelef, Belgacem Terki, Mohammed Sadok Mahboub, and Touhami Lanez. "N-Ferrocenylmethyl-2-nitroaniline." Acta Crystallographica Section E Structure Reports Online 68, no. 10 (September 29, 2012): m1318. http://dx.doi.org/10.1107/s1600536812039177.

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49

Ellena, J., G. Punte, and B. E. Rivero. "4-Methyl-2-nitroaniline." Acta Crystallographica Section C Crystal Structure Communications 52, no. 8 (August 15, 1996): 2074–76. http://dx.doi.org/10.1107/s0108270195016234.

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50

Britton, D. "4,5-Dichloro-2-nitroaniline." Acta Crystallographica Section C Crystal Structure Communications 55, no. 10 (October 15, 1999): IUC9900116. http://dx.doi.org/10.1107/s0108270199098698.

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