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Journal articles on the topic 'Hypophosphoreux, Acide'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Guo, Ai Hong, Fu Sheng Wang, and Bao Gui Zhang. "Electrodialytic Production of Hypophosphorous Acid with Six-Compartment Electrolytic Cell and Ti-PbO₂ Anode." Advanced Materials Research 96 (January 2010): 67–70. http://dx.doi.org/10.4028/www.scientific.net/amr.96.67.

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The hypophosphorous acid was achieved with the electrodialysis, which comprises a Ti-PbO2 anode, a stainless steel cathode and an aqueous solution of sodium hypophosphite. The process of producing hypophosphorous acid was studied. Some factors, such as anodic voltage, product concentration and current efficiency were conducted. The results showed that, six-compartment electrodialytic cell could be used to improve the hypophosphorous acid content and purity. The Ti-PbO2 electrode was optimal anode material to cut down the cost of production. The process was simple, low cost and high efficient,

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2

Du, Yi, Bradley Wooler, Chris Kliewer, Sabato Miseo, and Stuart Soled. "Unexpected sintering of small supported Ni2P under real feed conditions." Catalysis Science & Technology 10, no. 5 (2020): 1224–27. http://dx.doi.org/10.1039/c9cy02284h.

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3

Cui, Guofeng, Shaofang Liu, Kaiming Wang, Qing Li, and Gang Wu. "Discovering p-doped mechanism in non-magnetic Ni–P films for HDD substrate: a combined experimental and theoretical study." RSC Adv. 4, no. 28 (2014): 14663–72. http://dx.doi.org/10.1039/c3ra47217e.

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4

Guo, Ai Hong, Xue Jiao Tang, and Bao Gui Zhang. "Electrodialysis Production of Hypophosphorous Acid with Ti-PbO₂ Anode." Advanced Materials Research 178 (December 2010): 133–36. http://dx.doi.org/10.4028/www.scientific.net/amr.178.133.

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It is a method of preparing hypophosphorous acid with electrodialysis. It comprises Ti-PbO2 anode, an insoluble cathode and an aqueous solution of hypophosphite anions in six-compartment electrolytic cell. The direct current, through the insoluble anode to cathode in electrical contact with the aqueous solution to generate H+, forms hypophosphorous acid solution. In this paper, the best term of different factors about the experiment was studied. The best condition was to keep the NaH2PO2 concentration between 300 and 500g/L, current value 3.0A, reaction time 12-18 h. The process is simple, low

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5

Li, Wenzhe, Jiangwei Li, Jiaoli Li, Jiandong Fan, Yaohua Mai, and Liduo Wang. "Addictive-assisted construction of all-inorganic CsSnIBr2mesoscopic perovskite solar cells with superior thermal stability up to 473 K." Journal of Materials Chemistry A 4, no. 43 (2016): 17104–10. http://dx.doi.org/10.1039/c6ta08332c.

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6

El-Shatoury, Salah A. "Polarographic Studies on Selenite Ions in Aqueous Hypophosphorous Acid Solutions." Collection of Czechoslovak Chemical Communications 61, no. 7 (1996): 992–98. http://dx.doi.org/10.1135/cccc19960992.

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The polarographic behaviour and determination of Se(IV) in hypophosphorous acid solutions of concentrations varying from 0.05 mol l-1 to 4.0 mol l-1 at 25 ± 0.1 °C were investigated. It was shown that the reduction of 5 . 10-4 mol l-1 Se(IV) at the DME takes place in two waves independent on the acid concentration. The reduction waves correspond to the transfer of 6 electrons. A mechanism of the reduction at the DME has been suggested. A method for the analytical determination of Se(IV) species in 0.1 mol l-1 and 0.05 mol l-1 hypophosphorous acid in absence and in presence of 3 . 10-6 mol l-1

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7

Gelat, Fabien, Maxime Roger, Christophe Penverne, Ahmed Mazzad, Christian Rolando, and Laëtitia Chausset-Boissarie. "UV-mediated hydrophosphinylation of unactivated alkenes with phosphinates under batch and flow conditions." RSC Advances 8, no. 15 (2018): 8385–92. http://dx.doi.org/10.1039/c7ra12977g.

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In this study, we report an efficient UV-mediated hydrophosphinylation of unactivated alkenes with H-phosphinates and hypophosphorous acid under radical free conditions in batch and in continuous flow.

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8

Yang Ye, 杨晔, 杨小丽 Yang Xiaoli, 何丽红 He Lihong, 高九林 Gao Jiulin, 连亚军 Lian Yajun та 杨晓晖 Yang Xiaohui. "次磷酸增强的准二维钙钛矿天蓝色发光器件". Acta Optica Sinica 41, № 17 (2021): 1716001. http://dx.doi.org/10.3788/aos202141.1716001.

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9

Perin, G., M. B. Silveira, A. M. Barcellos, R. G. Jacob, and D. Alves. "Polyethylene glycol-400/H3PO2: an eco-friendly reductive system for the synthesis of selanylesters." Organic Chemistry Frontiers 2, no. 11 (2015): 1531–35. http://dx.doi.org/10.1039/c5qo00256g.

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An alternative green method was described for the synthesis of selanylesters by reactions of acyl chlorides with arylselenols, generated in situ by reaction of diaryl diselenides with hypophosphorous acid (H<sub>3</sub>PO<sub>2</sub>) using polyethylene glycol-400 (PEG-400) as the solvent.

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10

Bravo-Altamirano, Karla, and Jean-Luc Montchamp. "A novel approach to phosphonic acids from hypophosphorous acid." Tetrahedron Letters 48, no. 33 (2007): 5755–59. http://dx.doi.org/10.1016/j.tetlet.2007.06.090.

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11

Dinawall, J. G., J. Ehrenfreund, R. G. Hall та J. Jack. "Synthesis of γ-Aminopropylphosphonous Acids Using Hypophosphorous Acid Synthons". Phosphorus and Sulfur and the Related Elements 30, № 3-4 (1987): 571–74. http://dx.doi.org/10.1080/03086648708079129.

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12

Tyka, R., and G. Hägele. "Synthesis of Benzylphosphonous Acids VIA Direct Amidoalkylation of Hypophosphorous Acid." Phosphorus, Sulfur, and Silicon and the Related Elements 51, no. 1-4 (1990): 299. http://dx.doi.org/10.1080/10426509008040833.

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13

Tyka, Roman, and Gerhard Hägele. "SYNTHESIS OF AMINOBENZYLPHOSPHONOUS ACIDS VIA DIRECT AMIDOALKYLATION OF HYPOPHOSPHOROUS ACID." Phosphorus, Sulfur, and Silicon and the Related Elements 44, no. 1-2 (1989): 103–7. http://dx.doi.org/10.1080/10426508908043712.

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14

Urbanovský, Peter, Jan Kotek, Ivana Císařová, and Petr Hermann. "Selective and clean synthesis of aminoalkyl-H-phosphinic acids from hypophosphorous acid by phospha-Mannich reaction." RSC Advances 10, no. 36 (2020): 21329–49. http://dx.doi.org/10.1039/d0ra03075a.

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Acetic acid was used as a new solvent for phospha-Mannich reaction leading to clear reaction mixtures and high yields of the aminoalkylphosphonous acids (AHPA), and hydroxymethylated species were suggested as key intermediates in the reaction.

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15

Larson, John W., and Margaret Pippin. "Thermodynamics of ionization of hypophosphorous and phosphorous acids. Substituent effects on second row oxy acids." Polyhedron 8, no. 4 (1989): 527–30. http://dx.doi.org/10.1016/s0277-5387(00)80751-2.

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16

Wu, Xue-Song, Meng-Guang Zhou, Yan Chen, and Shi-Kai Tian. "Catalytic Allylation of Hypophosphorous Acid andH-Phosphinic Acids with Primary Allylic Amines." Asian Journal of Organic Chemistry 3, no. 6 (2014): 711–14. http://dx.doi.org/10.1002/ajoc.201402050.

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17

TYKA, R., and G. HAEGELE. "ChemInform Abstract: Synthesis of Benzylphosphonous Acids via Direct Amidoalkylation of Hypophosphorous Acid." ChemInform 22, no. 1 (2010): no. http://dx.doi.org/10.1002/chin.199101280.

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18

Yan, Peifang, Xiumei Liu, Zhanwei Xu, and Zongchao Conrad Zhang. "Markedly Different Decomposition Temperature and Products of Biomass Pyrolysis at Low Temperature—Differentiation of Acids in Their Effects on Pretreatment." Sustainable Chemistry 2, no. 1 (2021): 8–23. http://dx.doi.org/10.3390/suschem2010002.

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Pine as a softwood and poplar as a hardwood pretreated with hydrochloric acid (HCl), phosphoric acid (H3PO4), and hypophosphorous acid (H3PO2) are studied for the pyrolytic properties and products in thermogravimetry (TG) and fixed bed reactor. The pyrolysis performances are pronouncedly distinguished due to the compositional and structural changes induced by the acid pretreatments. Reduction in the mineral content in the biomass feedstocks by pretreatment with the acids results in significant changes in the pyrolytic products. The residual P in the H3PO2-pretreated biomass apparently catalyze

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19

LIU, WANMIN, QILONG LIU, LV XU, MULAN QIN, and JIYONG DENG. "A ZERO-EMISSION ELECTROLESS NICKEL PLATING BATH." Surface Review and Letters 26, no. 01 (2019): 1850130. http://dx.doi.org/10.1142/s0218625x18501305.

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A zero-emission electroless nickel plating bath was investigated, which consisted of nickel hypophosphite, hypophosphorous acid, lithium acetate, citric acid and maleic acid. The bath stability, bath life and plating rate were 68.0[Formula: see text]min, 8 cycles and 13.39[Formula: see text][Formula: see text]m/h, respectively. The Ni–P plating layer showed smooth appearance with lots of small continuous nodules, with 12.23[Formula: see text]wt.% phosphorus content. The electrochemical measurements showed that the deposit exhibited excellent corrosion resistance. All of these properties of the

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20

Nastran, Martin, and Berthold Stöger. "The order/disorder phase transition of hypophosphorous acid H3PO2." Zeitschrift für Kristallographie - Crystalline Materials 236, no. 5-7 (2021): 163–72. http://dx.doi.org/10.1515/zkri-2021-2014.

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Abstract Hypophosphorous acid, H3PO2 is dimorphic with a phase transition in the 200–225 K range. The H3PO2 molecules are connected by hydrogen bonding to infinite chains extending in the [100] direction. In the high-temperature phase (P21212, Z ′ = 1 2 ${Z}^{\prime }=\frac{1}{2}$ ), the hydrogen bonds are disordered about a two-fold rotation axis. On cooling below the phase transition temperature, the hydrogen bonds become ordered, resulting in a symmetry reduction of the klassengleiche type of index 2. In the low-temperature phase (P212121, Z ′ = 1 ${Z}^{\prime }=1$ ), the c parameter is dou

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21

Kaboudin, B., and E. Jafari. "One-Pot Synthesis of 1-Aminophosphinic acids using 50% Hypophosphorus Acid under microwave irradiation." Journal of the Iranian Chemical Society 5, S1 (2008): S97—S102. http://dx.doi.org/10.1007/bf03246496.

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22

Ayoko, G. Adefikayo. "Oxidations of hypophosphorus and arsenious acids by 12-tungstocobaltate(III) anion in aqueous solution." Transition Metal Chemistry 15, no. 6 (1990): 421–24. http://dx.doi.org/10.1007/bf01040768.

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23

Ryder, D. S. "Separation of orthophosphoric, phosphorous and hypophosphorous acids using single-column ion chromatography with conductivity detection." Journal of Chromatography A 354 (January 1986): 438–41. http://dx.doi.org/10.1016/s0021-9673(01)87045-x.

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24

Wu, Xue-Song, Meng-Guang Zhou, Yan Chen, and Shi-Kai Tian. "ChemInform Abstract: Catalytic Allylation of Hypophosphorous Acid and H-Phosphinic Acids with Primary Allylic Amines." ChemInform 45, no. 51 (2014): no. http://dx.doi.org/10.1002/chin.201451191.

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25

Kaboudin, Babak, та Nasser As-habei. "Microwave-assisted synthesis of α-aminophosphinic acids from hypophosphorus acid salts under solvent free conditions". Tetrahedron Letters 44, № 22 (2003): 4243–45. http://dx.doi.org/10.1016/s0040-4039(03)00893-1.

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26

Biver, Marc, and Montserrat Filella. "A general strategy for the voltammetric trace determination of tellurium in geochemical and environmental matrices after arsenic coprecipitation and critical assessment of digestion schemes." Environmental Chemistry 17, no. 2 (2020): 85. http://dx.doi.org/10.1071/en19164.

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Environmental contextAmong chemical elements classified as elements of strategic importance, tellurium is rapidly becoming an emergent contaminant. There is, however, no accurate and sensitive method for measuring tellurium concentrations in environmental and geological samples (e.g., soils, sediments), and thus it is not possible to determine whether an ecosystem is being polluted by human activities. This study provides a reliable answer to this problem. AbstractA general method is proposed for the determination of tellurium in environmental and geochemical samples. Samples may be digested b

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27

Akbayeva, Dina N., Massimo Di Vaira, Stefano Seniori Costantini, Maurizio Peruzzini, and Piero Stoppioni. "Stabilization of the tautomers HP(OH)2and P(OH)3of hypophosphorous and phosphorous acids as ligands." Dalton Trans., no. 2 (2006): 389–95. http://dx.doi.org/10.1039/b510479c.

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28

Fernandez, M. E., G. Murillo, R. A. Vargas, D. Peña Lara, and J. E. Diosa. "Improvement of Proton-ExchangeMembranes Based on(1x)(H3PO2/PVA)-xTiO2." Ingeniería y Ciencia 13, no. 25 (2017): 153–66. http://dx.doi.org/10.17230/ingciencia.13.25.6.

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Using impedance spectroscopy (IS), differential scanning calorimetry (DSC),thermogravimetric analysis (TGA), and infrared spectroscopy (IR) tech-niques to study the polymer electrolyte membranes based on poly(vinylalcohol) (PVA) and hypophosphorous acid (H3PO2) with different tita-nium oxide nanoparticles (TiO2) concentrations. The polymer systems(1−x)(H3PO2/ PVA) +xTiO2were prepared using the sol-casting methodand different weight percent of TiO2,x≤10.0. The DSC results showthat the glass transition for molar fraction P/OH = 0.3 appears around 75°Cand for the samples doped with TiO2around 35

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29

Lewkowski, Jarosław, and Małgorzata Rybarczyk. "Stereochemical aspects of the hypophosphorous acid addition to terephthalic schiff bases. Synthesis of new 1,4-phenylene-bis-aminomethane-bis-phosphonous acids." Heteroatom Chemistry 19, no. 3 (2008): 283–87. http://dx.doi.org/10.1002/hc.20422.

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30

Krebs, HD. "Thienoisothiazoles. III. The Synthesis and Reactions of 3-Phenyl-5-alkylthioisothiazole-4-carbonitriles and 3-Phenylthieno[3,2-d]isothiazoles." Australian Journal of Chemistry 42, no. 8 (1989): 1291. http://dx.doi.org/10.1071/ch9891291.

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Oxidation of the alkyl 3-amino-4-cyano-3-phenylpropenedithioates (1), obtained by alkylation of the condensation product of 3-amino-3-phenylpropenenitrile and carbon disulfide, produced 3-phenyl-5-alkylthioisothiazole-4-carbonitriles (2a-d). The ease of nucleophilic displacement of the S-alkyl group in the isothiazole (2a) was utilized to synthesize the isothiazoles (2f-j). 3-Phenylthieno[3,2-d] isothiazole (3e) was prepared by deamination, hydrolysis and decarboxylation of the intermediate ethyl 4-amino-3-phenylthieno[3,2-d]isothiazole-5-carboxylate (3a), which was obtained by ring-closure of

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31

Murphy, John A. "Free radicals in synthesis. Clean reagents affording oxidative or reductive termination." Pure and Applied Chemistry 72, no. 7 (2000): 1327–34. http://dx.doi.org/10.1351/pac200072071327.

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Neurotoxic organotin reagents currently play a key role in radical chemistry. As a result, this is an important area for development of new clean replacement reactions. The pharmaceutical industry in particular has had to avoid use of radical methodology for the formation of carbon_carbon bonds for this reason. With the current dawn in green chemistry, a host of new clean radical methods is beginning to flourish. Our aim has been to develop new nontoxic methodology for carbon_carbon bond formation by radical chemistry, which would provide either reductive termination (giving a hydrogen atom to

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32

Bravo-Altamirano, Karla, and Jean-Luc Montchamp. "A Novel Approach to Phosphonic Acids from Hypophosphorous Acid." ChemInform 38, no. 48 (2007). http://dx.doi.org/10.1002/chin.200748168.

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33

NIFANT'EV, E. E., L. A. SOLOVETSKAYA, V. I. MASLENNIKOVA, R. K. MAGDEEVA, and N. M. SERGEEV. "ChemInform Abstract: Reaction of Acetylenes with Hypophosphorous and Phosphinic Acids." Chemischer Informationsdienst 17, no. 43 (1986). http://dx.doi.org/10.1002/chin.198643220.

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34

TYKA, R., and G. HAEGELE. "ChemInform Abstract: Synthesis of Aminobenzylphosphonous Acids via Direct Amidoalkylation of Hypophosphorous Acid." ChemInform 21, no. 8 (1990). http://dx.doi.org/10.1002/chin.199008211.

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35

LARSON, J. W., and M. PIPPIN. "ChemInform Abstract: Thermodynamics of Ionization of Hypophosphorous and Phosphorous Acids. Substituent Effects on Second Row Oxy Acids." ChemInform 20, no. 22 (1989). http://dx.doi.org/10.1002/chin.198922011.

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36

ROMANOV, G. V., R. YA NAZMUTDINOV, T. YA RYZHIKOVA, T. V. GRYAZNOVA, and N. N. PUDOVIK. "ChemInform Abstract: REACTIONS OF FULLY SUBSTITUTED ESTERS OF HYPOPHOSPHOROUS AND PHENYLPHOSPHONOUS ACIDS WITH AZOMETHINES." Chemischer Informationsdienst 16, no. 8 (1985). http://dx.doi.org/10.1002/chin.198508262.

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37

Kaboudin, Babak, та Nasser As-habei. "Microwave-Assisted Synthesis of α-Aminophosphinic Acids from Hypophosphorus Acid Salts under Solvent Free Conditions." ChemInform 34, № 36 (2003). http://dx.doi.org/10.1002/chin.200336139.

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38

"Functionalization of Amberlite XAD-4 with 8-hydroxyquinoline chelator using aryldiazonium radical reaction and its application for solid phase extraction of trace metals from groundwater samples." Global NEST: the international Journal, September 14, 2020. http://dx.doi.org/10.30955/gnj.003165.

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<p>In this work, the aryldiazonium salts radical addition method has been used successfully to anchor 8-hydroxyquinoline (8-HQ) moieties onto the surface of Amberlite XAD-4 beads. The nitroaniline aryldiazonium salt was generated (in-situ) and covalently grafted onto Amberlite XAD-4 by aid of hypophosphorous acid as a catalyst to facilitate the anchorage of 8-HQ chelator making use of the conventional diazo coupling. The successfulness of the synthesized chelating resin was confirmed by (ATR-IR), (TGA) and (XPS). The risen was packed into cartridges and used with standard solid phase ext

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39

Lewkowski, Jaroslaw, and Malgorzata Rybarczyk. "ChemInform Abstract: Stereochemical Aspects of the Hypophosphorous Acid Addition to Terephthalic Schiff Bases. Synthesis of New 1,4-Phenylene-bis-aminomethane-bis-phosphonous Acids." ChemInform 39, no. 31 (2008). http://dx.doi.org/10.1002/chin.200831190.

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