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Journal articles on the topic 'Aromatic amines'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 June 2025

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1

Manthey, MK, SG Pyne, and RJW Truscott. "Addition of Aliphatic and Aromatic Amines to Catechol in Aqueous Solution Under Oxidizing Conditions." Australian Journal of Chemistry 42, no. 3 (1989): 365. http://dx.doi.org/10.1071/ch9890365.

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The oxidation of catechol in the presence of two aliphatic and aromatic amines has been investigated. In aqueous solutions of pH 7.0 and 11.7, the substitution pattern of the adduct was dependent on the type of amine used. Aromatic amines produced 4,5-disubstituted o-quinones, whereas aliphatic amines gave either 2,4,5-trisubstituted or 2,4-disubstituted o-quinone adducts. A rationale based upon the stability of vinylogous amides is presented to account for the observed substitution pattern.

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2

Otsuka, Rikuto, Kazuo Maruhashi, and Tomohiko Ohwada. "Latent Brønsted Base Solvent-Assisted Amide Formation from Amines and Acid Chlorides." Synthesis 50, no. 10 (2018): 2041–57. http://dx.doi.org/10.1055/s-0037-1609342.

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Weakly basic amines, including even neutral amines such as nitroaniline and aminocarboxylic acids, react with acid chlorides very efficiently in N,N-dimethylacetamide (DMAC), without addition of a base, to give the corresponding amides in high yields. The role of DMAC and related solvents as latent Brønsted bases was studied in these amidation reactions. Less basic amines, such as aromatic amines, reacted with benzoyl chloride faster than more basic aliphatic amines.

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3

Arora, Revika, Satya Paul, and Rajive Gupta. "A mild and efficient procedure for the conversion of aromatic carboxylic esters to secondary amides." Canadian Journal of Chemistry 83, no. 8 (2005): 1137–40. http://dx.doi.org/10.1139/v05-134.

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A mild and efficient procedure has been developed for the conversion of aromatic carboxylic esters to secondary amides using reusable Zn dust with microwave heating in the presence of N,N-dimethylformamide or conventional heating by stirring in an oil bath using THF as solvent. Zn dust can be reused several times after simple washing with dil. HCl and distilled water.Key words: aromatic carboxylic esters, aromatic primary amines, secondary amides, Zn dust, microwave activation.

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4

Bittner, Nataly, Andy Boon, Evert H. Delbanco, Christof Walter, and Angela Mally. "Assessment of aromatic amides in printed food contact materials: analysis of potential cleavage to primary aromatic amines during simulated passage through the gastrointestinal tract." Archives of Toxicology 96, no. 5 (2022): 1423–35. http://dx.doi.org/10.1007/s00204-022-03254-w.

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AbstractRecent analyses conducted by German official food control reported detection of the aromatic amides N-(2,4-dimethylphenyl)acetamide (NDPA), N-acetoacetyl-m-xylidine (NAAX) and 3-hydroxy-2-naphthanilide (Naphthol AS) in cold water extracts from certain food contact materials made from paper or cardboard, including paper straws, paper napkins, and cupcake liners. Because aromatic amides may be cleaved to potentially genotoxic primary amines upon oral intake, these findings raise concern that transfer of NDPA, NAAX and Naphthol AS from food contact materials into food may present a risk to human health. The aim of the present work was to assess the stability of NDPA, NAAX and Naphthol AS and potential cleavage to 2,4-dimethylaniline (2,4-DMA) and aniline during simulated passage through the gastrointestinal tract using static in vitro digestion models. Using the digestion model established by the National Institute for Public Health and the Environment (RIVM, Bilthoven, NL) and a protocol recommended by the European Food Safety Authority, potential hydrolysis of the aromatic amides to the respective aromatic amines was assessed by LC–MS/MS following incubation of the aromatic amides with digestive fluid simulants. Time-dependent hydrolysis of NDPA and NAAX resulting in formation of the primary aromatic amine 2,4-DMA was consistently observed in both models. The highest rate of cleavage of NDPA and NAAX was recorded following 4 h incubation with 0.07 M HCl as gastric-juice simulant, and amounted to 0.21% and 0.053%, respectively. Incubation of Naphthol AS with digestive fluid simulants did not give rise to an increase in the concentration of aniline above the background that resulted from the presence of aniline as an impurity of the test compound. Considering the lack of evidence for aniline formation from Naphthol AS and the extremely low rate of hydrolysis of the amide bonds of NDPA and NAAX during simulated passage through the gastrointestinal tract that gives rise to only very minor amounts of the potentially mutagenic and/or carcinogenic aromatic amine 2,4-DMA, risk assessment based on assumption of 100% cleavage to the primary aromatic amines would appear to overestimate health risks related to the presence of aromatic amides in food contact materials.

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5

Garg, Jai Anand, Subrata Chakraborty, Yehoshoa Ben-David, and David Milstein. "Unprecedented iron-catalyzed selective hydrogenation of activated amides to amines and alcohols." Chemical Communications 52, no. 30 (2016): 5285–88. http://dx.doi.org/10.1039/c6cc01505k.

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The first example of hydrogenation of activated amides to amines and alcohols catalyzed by an earth-abundant iron metal complex is discovered. A wide range of trifluoromethyl-substituted secondary and tertiary aromatic and aliphatic amides were hydrogenated.

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6

Zhang, Youcan, Han-Jun Ai та Xiao-Feng Wu. "Copper-catalyzed carbonylative synthesis of pyrrolidine-containing amides from γ,δ-unsaturated aromatic oxime esters". Organic Chemistry Frontiers 7, № 19 (2020): 2986–90. http://dx.doi.org/10.1039/d0qo00999g.

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7

Mustafayeva, Fatima A., and Najaf T. Kakhramanov. "BROMINATION OF AROMATIC AMINES." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, no. 4 (2019): 47–59. http://dx.doi.org/10.6060/ivkkt.20196204.5673.

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It is known that the antipyrenes, biological active substances (antitumor, antibacterial, antifungal, antiviral), pharmacological preparations on the basis of bromine-containing aromatic compounds are widely used in the industry. Considering this and increased demand for these substances the purpose of this work was to summarize and systematize the accumulated knowledge in this area. The article presents methods and reagent systems used in the bromination of aromatic amines. There have been described the bromination of aromatic amines with hydrogen bromide, sodium bromide, potassium bromide, ammonium bromide, copper (II) bromide, N-bromosuccinimide, N-bromosaccharin, polymer-supported halogenation agents, and difference of these methods from the point of view of the used oxidizer, the medium and the solvent, the catalyst, the regioselectivity, the quantity of bromine atoms in the obtained product. The influence of solvents, catalysts, the nature (electron-donor or electron-acceptor) and position (ortho-, meta-, para-) of the substituents in the aromatic ring, reaction conditions, molar ratio of the reagents, reaction temperature and carrying out time of bromination reaction of aromatic amines has been shown. The bromination reactions courses of aromatic amines in different solvents, in solvent free conditions, in solid states has been described. The bromination of aromatic amines under thermal, microwave, ultraviolet radiation conditions has been studied. In the paper the regioselective monobromination and also obtaining of di-, tri- bromo derivatives of aromatic amines has been shown. Taking into account today's priority to environmentally safe methods of bromination of aromatic amines they have been also mentioned. Given the above, in our opinion, the information presented in this article will help to optimize the production of bromo derivatives of aromatic amines used in industry, technics and technology.

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8

Amster, Regin Lawrence R. Iniya Udhaya C. John Peter Paul J.*. "PHYTOCHEMICAL ANALYSIS OF CHLOROFORM EXTRACT OF SARGASSUM LINEARIFOLIUM (TURNER) C.AG. (BROWN SEAWEED) USING UV-VIS, FTIR AND HPLC." INDO AMERICAN JOURNAL OF PHARMACEUTICAL RESEARCH 07, no. 09 (2017): 390–95. https://doi.org/10.5281/zenodo.1036435.

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The present investigation was carried to determine the phytochemicals of Sargassum linearifolium (Turner) C.Ag using UV-Visible spectroscopy, FTIR spectroscopy and HPLC. The UV-Visible spectrum of chloroform extract of Sargassum linearifolium (Turner) C.Ag. showed the peaks at the nm of 325, 412, 537, 610, 668, 882, 962, 1015 and 1059 with the absorption 1.573, 2.783, 0.593, 0.502, 1.150, 0.181, 0.108, 0.099 and 0.030 respectively. The FTIR spectrum was revealed the presence of amides, aliphatic nitro compounds, organo phosphorus compounds, ether, amines, aromatic nitro compounds, benzene ring in aromatic compound, aromatic nitro compound, primary amines, aldehyde, aliphatic compound and primary amides in chloroform extract of Sargassum linearifolium. The qualitative HPLC fingerprint profile displayed thirteen compounds at different retention times. The profile displayed seven prominent peaks at the retention times of 1.637min, 2.360min, 2.670min, 2.803min, 3.017min, 3.267min and 3.433min followed by six moderate peaks at the retention time of 4.003min, 4.293min, 5.970min, 7.210min, 8.673min and 9.773min.

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9

Luceri, Francesca, Giuseppe Pieraccini, Gloriano Moneti, and Piero Dolara. "Primary Aromatic Amines from Side-Stream Cigarette Smoke are Common Contaminants of Indoor Air." Toxicology and Industrial Health 9, no. 3 (1993): 405–13. http://dx.doi.org/10.1177/074823379300900302.

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A very sensitive mass-spectrometry method has been developed for the analysis of aromatic amines in tobacco smoke and in indoor air. Cigarettes were smoked with a smoking machine; the anwies from the smoke were trapped in a 5% HCl water solution containing internal standards and detected by gas chromatography/mass spectrometry in the selected-ion-monitoring (SIM) mode. The amines measured were the following: aniline. 2-toluidine, 3-toluidine, 4-toluidine, 2-ethylaniline, 3-ethylaniline, 4-ethylaniline, 2,3-dimethylaniline, 2,4-dimethylaniline, 2,5-dimethylaniline, 2,6-dimethylaniline, 1-naphthylamine, 2-naphthylamine, 2-methyl-1-naphthylamine, 2-aminobiphenyl,3-aminobiphenyl and 4-aminobiphenyl. We analyzed nine brands of cigarettes sold commercially in Italy (Gauloise, Nazionali, Marlboro, Camel, MS, MS mild and MS lights), with and without filter. Main-stream smoke contained a lower amount of aromatic amines than side-stream smoke: the total level of these amines in main-stream smoke ranged from 200 to 1300 nglcigarette, whereas the level of aromatic amines in side-stream smoke varied from 20,000 to 30,000 nglcigarette. The smoke of black-tobacco cigarettes had higher levels of aromatic amines compared to light-tobacco cigarettes and the filters significantly reduced aromatic amines in main-stream smoke. We also determined the levels of aromatic amines in ambient air, offices and houses. Some aromatic amines (aniline and toluidine) were detected in ambient air, as well as in rooms of non-smokers. Most measurements showed a considerable contamination of aromatic amines derived from side-stream smoke, which was detected also in parts of the buildings in which smoking was not allowed.

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10

Gu, Jiajia, Zheng Fang, Yuhang Yang, et al. "Copper-catalyzed one-pot oxidative amidation of alcohol to amide via C–H activation." RSC Advances 6, no. 92 (2016): 89413–16. http://dx.doi.org/10.1039/c6ra20732d.

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Copper-catalyzed one-pot oxidative amidation of both aliphatic and aromatic alcohols with N-chloramines, prepared in situ from many types of primary and secondary amines, to form amides under mild conditions.

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11

Ranken, Paul F., and B. Gary McKinnie. "Alkylthio aromatic amines." Journal of Organic Chemistry 54, no. 12 (1989): 2985–88. http://dx.doi.org/10.1021/jo00273a044.

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12

Serra, Jordi, Teodor Parella, and Xavi Ribas. "Au(iii)-aryl intermediates in oxidant-free C–N and C–O cross-coupling catalysis." Chemical Science 8, no. 2 (2017): 946–52. http://dx.doi.org/10.1039/c6sc03699f.

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Au(iii)-aryl species have been crystallographically isolated as reactive intermediates in oxidant-free C–O and C–N cross coupling processes, using aromatic and aliphatic alcohols and amines, as well as water and amides, as nucleophiles.

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13

Kong, Xianqiang, Huizi Zhang, Yunqing Xiao, Changsheng Cao, Yanhui Shi, and Guangsheng Pang. "Effective, transition metal free and selective C–F activation under mild conditions." RSC Advances 5, no. 10 (2015): 7035–48. http://dx.doi.org/10.1039/c4ra13753a.

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A simple and effective aromatic nucleophilic monosubstitution reaction for the synthesis of aromatic amines via selective C–F bond cleavage of various fluoroarenes with primary and secondary aromatic amines is demonstrated.

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14

Rathi, Payal. "Estimation and Removal of Hazardous Aromatic Amines by the Oxidation with NaIO4 Spectrophotometrically : A Review." International Journal of ChemTech Research 13, no. 3 (2020): 69–72. http://dx.doi.org/10.20902/ijctr.2019.130301.

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Many aromatic amines are the toxic in nature and impact a harmful effect in the body. Conversion of such carcinogenic aromatic amines in to other non carcinogenic compound by the oxidation process through sodium meta periodate is a good attempt in this way. Spectrophotometric method have been used for achieve the optimum condition and the estimation of aromatic amines.

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15

D.A., Utyanov, Kulikovskii A.V., Knyazeva A.S., and Kurzova A.A. "Studies of the accumulation of HAA in chilled second dinner dishes with garnish." Vsyo o myase, no. 5 (October 30, 2020): 30–32. http://dx.doi.org/10.21323/2071-2499-2020-5-30-32.

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The studies carried out made it possible to establish that during the industrial preparation of second lunch dishes with a garnish, heterocyclic aromatic amines are formed in the meat components. Heterocyclic aromatic amines were found in all samples tested. However, the lack of information on the preparation technology of the selected samples does not allow a full analysis of the results obtained. The largest amount of heterocyclic aromatic amines was formed in samples with chicken meat, which was prepared at the highest temperatures relative to other samples. The presence of heterocyclic aromatic amines in all studied samples indicates the potential harm of consumption of such products for human health

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16

Utyanov, D. A., A. V. Kulikovskii, A. S. Knyazeva, D. V. Khvostov, and A. A. Kurzova. "Monitoring studies of the content of heterocyclic aromatic amines in second-course meals with chilled side dishes sold in the Russian Federation." IOP Conference Series: Earth and Environmental Science 954, no. 1 (2022): 012088. http://dx.doi.org/10.1088/1755-1315/954/1/012088.

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Abstract The research carried out allowed establishing that during the industrial preparation of second-course meals with garnish in the meat components, heterocyclic aromatic amines are formed. Heterocyclic aromatic amines were found in all samples tested. However, the lack of information on the preparation technology of the selected samples does not allow a complete analysis of the results obtained. However, it is worth noting that the largest amount of heterocyclic aromatic amines was formed in samples with chicken meat cooked at the highest temperatures relative to other samples, judging by its appearance. The presence of heterocyclic aromatic amines in all studied samples indicates the potential harm of consuming such products for human health.

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17

Chen, Xiao Yun, Luming Zhang, Yaonan Tang, et al. "Green H2O-Promoted Solvent-Free Synthesis of Enaminocarbonyl Compounds with High Stereoselectivity from Electron-Deficient Terminal Alkynes." Synlett 31, no. 09 (2020): 878–82. http://dx.doi.org/10.1055/s-0040-1707968.

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A green H2O-promoted solvent-free hydroamination of electron-deficient terminal alkynes with amines has been developed. All secondary amines, including aliphatic and aromatic amines, gave the corresponding (E)-enamines in good to excellent yields, whereas primary aromatic amines afforded Z-configured products in moderate yields. Propiolates, propyn-1-ones, propynamides, and 1-(ethynylsulfonyl)-4-methylbenzene were explored in this Michael addition.

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18

RAJEEV, JAIN, and GUPTA SEEMA. "Rapid Thin Layer Chromatographic Aromatic Amines using Surfactants Separation of some Aromatic Amines using Surfactants." Journal of Indian Chemical Society Vol. 71, Nov 1994 (1994): 709–10. https://doi.org/10.5281/zenodo.5897716.

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School of Studies in Chemistry, Jiwaji University, Gwalior-474 011 <em>Manuscript received 15 July 1993, accepted 6 September 1993</em> Rapid Thin Layer Chromatographic Aromatic Amines using Surfactants Separation of some Aromatic Amines using Surfactants  

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19

Lupea, Xenia, and Mirabela Padure. "Synthesis and characterization of some N-substituted amides of salicylic acid." Zbornik Matice srpske za prirodne nauke, no. 104 (2003): 5–10. http://dx.doi.org/10.2298/zmspn0304005l.

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The synthesis of some N-substituted aromatic amides in the salicylic acid series was achieved, by direct reaction between primary amines and salicylic acid in inert organic solvent, in the presence of PCl3. The compounds that were obtained, partially not described in literature, were characterized by chemical-physical methods.

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20

Vineis, P., and R. Piratsu. "Aromatic Amines and Cancer." Journal of Urology 160, no. 5 (1998): 1930. http://dx.doi.org/10.1016/s0022-5347(01)62447-9.

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21

Birner, G., and H. G. Neumann. "Biomonitoring of aromatic amines II: hemoglobin binding of some monocyclic aromatic amines." Archives of Toxicology 62, no. 2-3 (1988): 110–15. http://dx.doi.org/10.1007/bf00570128.

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22

Kumar, S. Ramesh, and P. Leelavathi. "Cadmium chloride-catalyzed regioselective opening of oxiranes with aromatic amines — An improved protocol for the synthesis of 2-amino alcohols." Canadian Journal of Chemistry 85, no. 1 (2007): 37–41. http://dx.doi.org/10.1139/v06-186.

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Epoxides undergo rapid CdCl2-catalyzed ring-opening reaction with aromatic amines in mild reaction conditions (room temperature), affording the corresponding 2-amino alcohols with high regioselectivity.Key words: epoxides, aromatic amines, cadmium chloride, 2-amino alcohols.

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23

ZURER, PAMELA. "Catalytic Addition: Aromatic Amines Plus Aromatic Olefins." Chemical & Engineering News 78, no. 41 (2000): 11. http://dx.doi.org/10.1021/cen-v078n041.p011.

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24

Casti, Federico, Rita Mocci, and Andrea Porcheddu. "From amines to (form)amides: a simple and successful mechanochemical approach." Beilstein Journal of Organic Chemistry 18 (September 12, 2022): 1210–16. http://dx.doi.org/10.3762/bjoc.18.126.

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Two easily accessible routes for preparing an array of formylated and acetylated amines under mechanochemical conditions are presented. The two methodologies exhibit complementary features as they enable the derivatization of aliphatic and aromatic amines.

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25

Zhou, Haifeng, Yasuhiro Uozumi, Danyi Chen, et al. "Metal-free Reduction of Nitro Aromatics to Amines with B2(OH)4/H2O." Synlett 29, no. 13 (2018): 1765–68. http://dx.doi.org/10.1055/s-0037-1610086.

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A metal-free reduction of nitro aromatics mediated by diboronic acid with water as both the hydrogen donor and solvent under mild conditions has been developed. A series of aromatic amines were obtained with good functional group tolerance and in good yields.

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26

Shibutani, Shinya, and Arthur P. Grollman. "Molecular mechanisms of mutagenesis by aromatic amines and amides." Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis 376, no. 1-2 (1997): 71–78. http://dx.doi.org/10.1016/s0027-5107(97)00027-4.

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27

Sakai, Norio, Minoru Sasaki, and Yohei Ogiwara. "Copper(ii)-catalyzed oxidative N-nitrosation of secondary and tertiary amines with nitromethane under an oxygen atmosphere." Chemical Communications 51, no. 58 (2015): 11638–41. http://dx.doi.org/10.1039/c5cc03675e.

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The combination of Cu(OTf)<sub>2</sub> and DBU under an O<sub>2</sub> atmosphere effectively promoted the N-nitrosation of both secondary aromatic/aliphatic amines and tertiary aromatic amines with nitromethane (CH<sub>3</sub>NO<sub>2</sub>).

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28

Marinova, E., L. Georgiev, I. Totseva, K. Seizova, and T. Milkova. "Antioxidant activity and mechanism of action of some synthesised phenolic acid amides of aromatic amines." Czech Journal of Food Sciences 31, No. 1 (2013): 5–13. http://dx.doi.org/10.17221/280/2011-cjfs.

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The antioxidative activities and mechanism of action were studied of eight synthesised cinnamoyl- and hydroxycinnamoyl amides of biogenic amines (caffeoyldopamine, cinnamoyldopamine, p-coumaroyldopamine, feruloyldopamine, sinapoyldopamine, caffeoylphenylethylamine, caffeoyltyramine, and caffeoyltryptamine) in a wide concentration range (2.5&ndash;20 &times; 10<sup>&ndash;4</sup>M) during autoxidation of triacylglycerols of sunflower oil. It was established that all amides exhibited excellent antioxidant activity, higher than or comparable with that of caffeic acid. The best activity was shown by caffeoyldopamine followed by cinnamoyldopamine and caffeoyltyramine. The analysis of the kinetic data obtained showed that the presence of hydroxyl groups in the amino part (derivatives of dopamine and tyramine) led to direct oxidation of the molecules during the process and stabilisation of the resulting radicals. In contrast, the amides without hydroxyl groups in the amino part participated in the side reaction with peroxides and the resulting radicals took part in one side reaction of the chain propagation as did caffeic acid. &nbsp;

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29

Oz, E., and F. Oz. "Mutagenic and/or carcinogenic compounds in meat and meat products: Heterocyclic aromatic amines perspective." Theory and practice of meat processing 7, no. 2 (2022): 112–17. http://dx.doi.org/10.21323/2414-438x-2022-7-2-112-117.

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Meat and meat products, which have a very important place in terms of nutrition, can endanger human health if they are not properly prepared and preserved. Meat and meat products except for products such as sushi, which are deliberately consumed raw, are generally consumed immediately after cooking. Cooking done properly gives meat and meat products their unique taste and aroma, increases their digestibility and makes them microbiologically safe. However, some harmful food toxicants can occur during the cooking process. Heterocyclic aromatic amines can be formed during cooking of the proteinaceous foods such as meat and meat products. Epidemiological studies have proved that heterocyclic aromatic amines are mutagenic and/or carcinogenic compounds. Therefore, having sufficient knowledge about heterocyclic aromatic amines will help to reduce the health risk posed by these com pounds. In this context, in the present study, basic information about heterocyclic aromatic amines that can be formed during the heat treatment of meat and meat products was reviewed.

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Thimmegowda, Naraganahalli R., Kanchugarakoppal S. Rangappa, Gullahalli S. Jagadeesha, and Kempegowda Mantelingu. "Microwave-Assisted, Metal-Free, Chemoselective N-Formylation of Amines using 2-Formyl-3-methyl-1H-imidazol-3-ium Iodide and In Situ Synthesis of Benzimidazole and Isocyanides." SynOpen 06, no. 02 (2022): 132–40. http://dx.doi.org/10.1055/s-0041-1737605.

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AbstractAn efficient, environmentally benign, chemoselective, microwave-assisted N-formylation protocol of aromatic, aliphatic, alicyclic, benzylic amines, inactivated aromatic amines and sterically demanding heterocyclic amines using 2-formyl-1,3-dimethyl-1H-imidazol-3-ium iodide has been developed. This affords a series of N-substituted formamides with good to excellent yields (23 examples, 53–96% yield) and can be readily scaled. The methodology can be further extended to synthesize benzimidazole and isocyanide derivatives.

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31

Ciaccia, Maria, Silvia Pilati, Roberta Cacciapaglia, Luigi Mandolini, and Stefano Di Stefano. "Effective catalysis of imine metathesis by means of fast transiminations between aromatic–aromatic or aromatic–aliphatic amines." Org. Biomol. Chem. 12, no. 20 (2014): 3282–87. http://dx.doi.org/10.1039/c4ob00107a.

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32

D., K. Singh, Singh Shalini, and Srivastava Meenakshi. "Chromatography of aromatic amines on thin layers of zinc ferrocyanide-silica gel G with hybrid CTAB-alcohol-water mobile phase." Journal of Indian Chemical Society Vol. 82, Mar 2005 (2005): 250–53. https://doi.org/10.5281/zenodo.5826999.

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Department of Chemistry. Harcourt Butler Technological Institute, Kanpur-208 002, India E-mail : dhruvksl23@rediffmail.com                             Fax: 91-512-545312 <em>Manuscript received 6 February 2004. revised 9 September 2004. accepted 24 November 2004</em> Thin layer chromatography (TLC) of twenty aromatic amines on zinc ferrocyanide-silica gel G with CTAB or Brij 35-alcohol-water mobile phases has been studied. The effect of surfactant (CTAB) concentration below and above its critical micellar concentration on the rate of migration of amines (<em>R</em><sub>F</sub> value) was examined. On the basis of differential rate of migration (R<sub>F</sub> value) some analytically important separations of aromatic amines were achieved. The method has also been applied for separation and semiquantitative determination of aromatic amines.

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33

Sun, Jian Qi, Ming Tang, and Jun Dai. "Determination of Aromatic Amines in Wastewater by Dispersive Liquid-Liquid Microextraction Coupled to Capillary Gas Chromatography." Advanced Materials Research 881-883 (January 2014): 631–34. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.631.

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A simple and reliable method combining dispersive liquid-liquid microextracion (DLLME) with gas chromatography (GC) using flame ionization detection (FID) was developed for the simultaneous determination of aniline (AL),o-toluidine (o-TLD),N,N-dimethylaniline (N,N-DAL),p-chloroaniline (p-CAL), andp-nitroaniline (p-NAL) in wastewater. For this purpose, dispersive liquid-liquid microextraction (DLLME) was applied as a sample preparation technique. The DLLME conditions such as the types and volume of extraction solvent, the types and volume of the disperser solvent, pH value and salt addition were studied and optimized. The method was linear in the ranges from 2.2×10-3to 100.0 μg·mL-1for aforementioned aromatic amines withR2≥ 0.9968. The DLLME procedure allowed efficient recovery of the investigated aromatic amines ranging between 82 % and 92 % with a relative standard deviation (RSD) ≤ 3.4 for actual wastewater samples spiked with 5, 10 and 20 μg·mL-1of aromatic amines, respectively. These results showed the potential of this technique for aromatic amines monitoring in wastewater samples. Furthermore, the investigated methods are simple, reproducible, and inexpensive.

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34

Zhang, Yibin, Cheng Peng, Xiaojie Ma, Yanke Che, and Jincai Zhao. "Fluorescent and photoconductive nanoribbons as a dual-mode sensor for selective discrimination of alkyl amines versus aromatic amines." Chemical Communications 51, no. 81 (2015): 15004–7. http://dx.doi.org/10.1039/c5cc05382j.

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35

Alikina, Ekaterina N., and Eduard V. Pogorelcev. "Determination of aromatic amines in wastewater by capillary electrophoresis." Industrial laboratory. Diagnostics of materials 85, no. 7 (2019): 22–27. http://dx.doi.org/10.26896/1028-6861-2019-85-7-22-27.

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The possibility of aromatic amine determination using capillary electrophoresis on a «KAPEL-105M» device is studied. Due to their high toxicity, aromatic amines are rated as top- priority environmental pollutants and their content in the atmosphere and water in no way should not exceed MAC. Therefore, improvement and optimization of the instrumental methods of their determination, which can shorten the sample preparation, reduce analysis time, increase accuracy of determination, and also enable automation of analysis becomes an urgent goal of the study. A method for the separation and determination of aromatic amines (aniline, benzidine, 2-aminophenol, 1- and 2-naphthylamines, 2,6-diaminopyridine) by capillary electrophoresis on a «KAPEL-105M» device with a UV detector was developed. We have specified optimal conditions for the determination of aromatic amines (wavelength, pressure, time of sample introduction, voltage) and selected the most suitable electrolyte. The effect of the nature and concentration of the electrolyte on the determination of amines was analized. The developed method exhibited good reproducibility, accuracy, selectivity of determination, and the absence of the interfering influence of the basis of the wastewater sample. The developed method for determination of the aromatic amines was tested on model solutions and real samples of waste water, whereas the correctness of the procedure was proved in spike tests. Direct spectrophotometric detection (λ = 215 nm) revealed the following detection limits: 0.1 mg/dm3 for 1- and 2-naphthylamines, 0.5 mg/dm3 for aniline, 2-aminophenol and benzidine, and 1.0 mg/dm3 — for 2,6-diaminopyridine.

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36

Hozien, Zeinab A., Abd El-Wareth A. O. Sarhan, Hassan A. H. El-Sherief, and Abdalla M. Mahmoud. "A Convenient One-Pot Synthesis of Pyrazolo[3,4-d]pyrimidines and s-Triazolo[3,4-b][1,3,5]thiadiazines." Zeitschrift für Naturforschung B 52, no. 11 (1997): 1401–12. http://dx.doi.org/10.1515/znb-1997-1119.

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Abstract The reaction of 5-amino-3-aryl-1-phenylpyrazoles (1a-d) with formaldehyde and secondary amines in boiling ethanol gave the corresponding 4-alkylaminomethyl derivatives (2a-f) and bis-(4-pyrazolyl)methane (4a,b) as byproduct. Such reaction with primary aliphatic and aro matic amines at room temperature afforded 1,3,5-trisubstituted (5a-h) and 1,3.5,7-tetrasubstituted tetrahydropyrazolo[3,4-d]pyrimidines (8a-k) respectively in good yield. Similarily, the Mannich reaction of 5-mercapto-3-phenyl-1,2,4-triazole (9) with secondary amines, in boiling ethanol, and primary aromatic amines, at room temperature, gave 2 -substituted aminomethyl derivatives (10a-c) and (14a-g) respectively,while with primary aliphatic amines, p-toluidine and p-anisidine,at room temperature,and with other primary aromatic amines, in boiling ethanol, afforded the cyclized products 12,4-triazolo[3,4-b]thiadiazines (13a-e); (15f,g) and (15a-e), respectively.

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37

Kalyuzhnyi, S., V. Sklyar, T. Mosolova, I. Kucherenko, J. a. Russkova, and N. Degtyaryova. "Methanogenic biodegradation of aromatic amines." Water Science and Technology 42, no. 5-6 (2000): 363–70. http://dx.doi.org/10.2166/wst.2000.0536.

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Batch methanogenic toxicity and biodegradability of 2-, 3- and 4-aminobenzoic acids (ABA) as well as 4- and 5-aminosalicylic acids (ASA) have been studied in the presence of two mesophilic (Shell and cattle) and one thermophilic sludges. The aminoaromatics tested practically did not inhibit methanogenesis up to concentrations of 3–7 g/l; moreover, some of them (2-ABA, 4-ABA and 5-ASA) even exert a stimulating effect on aceticlastic activity of the sludges. Concerning biodegradability, 5-ASA was completely mineralised by all the sludges tested; however, 4-ASA was not degraded at all by any of the sludges. Both mesophilic sludges were able to perform a complete mineralization of 2-ABA but this was not a case for the thermophilic sludge. 3-ABA was not biodegraded only in the presence of the Shell sludge. On the contrary, 4-ABA was quantitatively mineralised only by the Shell sludge. All the adapted sludges were able to mineralise the corresponding aminoaromatics in N-deprived media. Cross-acclimatisationtrials showed that 2-ABA-, 5-ASA- and salicylic acid adapted sludges were unable to degrade any other aminoaromatics tested that manifest about a different nature of key bacteria responsible for primary decomposition of these substrates. The main possibility of continuous mineralization of 2-ABA as a unique source of carbon and nitrogen has been demonstrated using mesophilic UASB reactor inoculated by adapted sludge.

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38

Gorrod, J. W., and D. Manson. "The metabolism of aromatic amines." Xenobiotica 16, no. 10-11 (1986): 933–55. http://dx.doi.org/10.3109/00498258609038975.

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39

Torii, Sigeru, Hiroshi Okumoto, Hiroshi Satoh, Tohru Minoshima, and Seiji Kurozumi. "Electrochemical Deamination of Aromatic Amines." Synlett 1995, no. 05 (1995): 439–40. http://dx.doi.org/10.1055/s-1995-4998.

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40

Kang, Jahyo, and Koan Sung Kim. "N-cyclopropylation of aromatic amines." Journal of the Chemical Society, Chemical Communications, no. 12 (1987): 897. http://dx.doi.org/10.1039/c39870000897.

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Sato, Hisaya, Aiko Kanegae, Ryoji Yamaguchi, Kenji Ogino, and Jan Kurjata. "Oligomerization of Aromatic Tertiary Amines." Chemistry Letters 28, no. 1 (1999): 79–80. http://dx.doi.org/10.1246/cl.1999.79.

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42

Downing, R. S., P. J. Kunkeler, and H. van Bekkum. "Catalytic syntheses of aromatic amines." Catalysis Today 37, no. 2 (1997): 121–36. http://dx.doi.org/10.1016/s0920-5861(97)00005-9.

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43

Warner, Philip M., Jiwei Qi, Bin Meng, et al. "DNA cleavage by aromatic amines." Bioorganic & Medicinal Chemistry Letters 12, no. 1 (2002): 1–4. http://dx.doi.org/10.1016/s0960-894x(01)00688-6.

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Otson, Rein, John M. Leach, and Lambert T. K. Chung. "Sampling of airborne aromatic amines." Analytical Chemistry 59, no. 1 (1987): 58–62. http://dx.doi.org/10.1021/ac00128a012.

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45

Murkovic, M. "Analysis of heterocyclic aromatic amines." Analytical and Bioanalytical Chemistry 389, no. 1 (2007): 139–46. http://dx.doi.org/10.1007/s00216-007-1306-z.

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46

OZ, FATIH, and MUKERREM KAYA. "HETEROCYCLIC AROMATIC AMINES IN MEAT." Journal of Food Processing and Preservation 35, no. 6 (2011): 739–53. http://dx.doi.org/10.1111/j.1745-4549.2011.00524.x.

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47

Berthelot, Jacques, Catherine Guette, Paul-Louis Desbène, Jean-Jacques Basselier, Patrick Chaquin, and Daniel Masure. "Bromation régiosélective en série aromatique. I: Monobromation en position para de phénols et d'aminés aromatiques par le tribromure de tétrabutylammonium." Canadian Journal of Chemistry 67, no. 12 (1989): 2061–66. http://dx.doi.org/10.1139/v89-320.

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The reaction of tetrabutylammonium tribromide (TBABr3) with phenols and aromatic amines in aprotic and non-basic solvents at 20 °C gives exclusively the corresponding para-brominated compounds in high yields. A mechanism involving electrophilic substitution by the tribromide anion Br3− itself is suggested to account for the results, especially the regioselective para bromination. Keywords: bromination, tetrabutylammonium tribromide, phenols, aromatic amines.

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48

Sarma, Madhushree Das, and Subhojit Ghosh. "Mechanochemistry in Action: Exploitation of Internal Acid Catalysis in Solvent-Free Synthesis of Imines and Evaluation of Radical Scavenging Activities of Imino Derivatives." Asian Journal of Chemistry 33, no. 2 (2021): 345–49. http://dx.doi.org/10.14233/ajchem.2021.23009.

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Mechanochemical protocol has been exploited to accomplish the synthesis of imino derivatives from aromatic amines with acidic functionalities and different aromatic aldehydes in excellent to nearly quantitative yields. Presence of acidic groups in the aromatic amines has been found to have profound influence on the course of the reaction. The prepared imines were screened for in vitro antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. Some of the prepared imino derivatives displayed good to moderate antioxidant property when compared with standard natural antioxidant (L-ascorbic acid).

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Hung, Tran Quang, Tuan Thanh Dang, Peter Langer, et al. "Efficient Copper-Catalysed Synthesis of Carbazoles by Double N-Arylation of Primary Amines with 2,2′-Dibromobiphenyl in the Presence of Air." Synlett 32, no. 06 (2021): 611–15. http://dx.doi.org/10.1055/s-0040-1706641.

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AbstractAn efficient Cu-catalyzed synthesis of carbazole derivatives is reported, which proceeds by double C–N coupling reactions of 2,2′-dibromobiphenyl and amines in the presence of air. The reaction is robust, proceeds in high yields, and tolerates a series of amines including neutral, electron-rich, electron-deficient aromatic amines and aliphatic amines.

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50

Sabbioni, Gabriele, and Armin Beyerbach. "Haemoglobin adducts of aromatic amines: diamines and polyaromatic amines." Journal of Chromatography B: Biomedical Sciences and Applications 744, no. 2 (2000): 377–87. http://dx.doi.org/10.1016/s0378-4347(00)00265-6.

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