Academic literature on the topic 'Bis-phosphonic acids'

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Journal articles on the topic "Bis-phosphonic acids"

1

Rao, B. Venkateswara, and D. M. Puri. "Copper(II) Complexes of Organophoshonic Acids-A Comparative Study." E-Journal of Chemistry 8, s1 (2011): S271—S281. http://dx.doi.org/10.1155/2011/813586.

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Polynuclear copper(II) derivatives of 1-hydroxyethylidenediphosphonic acid (HEDP), 1-aminoethylidenediphosphonic acid (AEDP, H4L),α-aminobenzylidene diphosphonic acid (ABDP, H4L), 1-amino-2-carboxyethane- 1,1-diphosphonic acid (ACEDP, H5L), 1,3 diaminopropane-1,1,3,3-tetra-phosphonic acid (DAPTP, H8L), Ethylenediamine-N,N'-bis (dimethyl-methylenephosphonic) acid (EDBDMPO, H4L),o-phenylene-diamine-N,N'-bis (dimethylmethylenephosphonic) acid (PDBDMPO, H4L), diethylene triamine –N,N,N',N',N"N-penta (methylene phosphonic) acid (DETAPMPO, H10L) and diethylene triamine –N,N"-bis (dimethyl methylene
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2

Popov, Konstantin, Hannu Rönkkömäki, and Lauri H. J. Lajunen. "Critical evaluation of stability constants of phosphonic acids (IUPAC Technical Report)." Pure and Applied Chemistry 73, no. 10 (2001): 1641–77. http://dx.doi.org/10.1351/pac200173101641.

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Available experimental data on stability constants of proton and metal complexes for 10 phosphonic acids [methylphosphonic acid, 1-hydroxyethane-1,1-diylbisphosphonic acid, dichloromethylenebisphosphonic acid, amino-methanephosphonic acid, N-(phosphonomethyl)glycine, imino-N,N-bis(methylenephosphonic acid), N-methylamino-N,N-bis(methylenephosphonic acid), nitrilotris(methylenephosphonic acid), 1,2-diaminoethane-N,N,N´,N´-tetrakis-(methylenephosphonic acid), and diethylenetriamine-N,N,N´,N´´,N´´-pentakis-(methylenephosphonic acid)], published in 1950­1997, have been critically evaluated. For th
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3

Chung, Yeong-Jin. "Combustive Characteristics of Wood Specimens Treated with Alkylenediaminoalkyl-Bis-Phosphonic Acids." Journal of Korean Institute of Fire Science and Engineering 27, no. 6 (2013): 57–63. http://dx.doi.org/10.7731/kifse.2013.27.6.057.

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4

Penicaud, Virginie, Fabrice Odobel, and Bruno Bujoli. "Facile and efficient syntheses of 2,2′-bipyridine-based bis(phosphonic) acids." Tetrahedron Letters 39, no. 22 (1998): 3689–92. http://dx.doi.org/10.1016/s0040-4039(98)00647-9.

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5

Yushkova, Yu V., S. V. Morozov, E. I. Chernyak, and N. A. Grigor′ev. "Synthesis of New Trolox-Based Antioxidants Containing Amino-bis-Phosphonic Acids." Chemistry of Natural Compounds 53, no. 4 (2017): 764–66. http://dx.doi.org/10.1007/s10600-017-2115-z.

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6

Guenin, Erwann, Estelle Degache, Jean Liquier, and Marc Lecouvey. "Synthesis of 1-Hydroxymethylene-1,1-bis(phosphonic acids) from Acid Anhydrides: Preparation of a New Cyclic 1-Acyloxymethylene-1,1-bis(phosphonic acid)." European Journal of Organic Chemistry 2004, no. 14 (2004): 2983–87. http://dx.doi.org/10.1002/ejoc.200400053.

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7

Kalchenko, Vitaly, Olga Kalchenko, and Sergiy Cherenok. "Complexation of Calix[4]arene bis-Hydroxymethylenediphosphonic Acid with Amino acids. Binding Constants Determination by RP HPLC Method." French-Ukrainian Journal of Chemistry 3, no. 2 (2015): 93–100. http://dx.doi.org/10.17721/fujcv3i2p93-100.

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Host-Guest complexation of calixarene-bis-hydroxymethylenediphosphonic acid with 17 amino acids in water solution had been studied by the RP HPLC and molecular modelling methods. It had been shown the binding constants of the complexes are depended on the nature of the amino acid residue, log P and pKa of the acids. The complexation is mainly determined by the electrostatic interactions between the positively charged nitrogen atom of the amino acid and the negatively charged oxygen atom of phosphonic acid residue of the calixarene, the Host-Guest p-p, СН-p and solvophobic interactions.
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8

Vrbovská, Silvie, Antonín Holý, Radek Pohl, and Milena Masojídková. "Bifunctional Acyclic Nucleoside Phosphonates. 1. Symmetrical 1,3-Bis[(phosphonomethoxy)propan-2-yl] Derivatives of Purines and Pyrimidines." Collection of Czechoslovak Chemical Communications 71, no. 4 (2006): 543–66. http://dx.doi.org/10.1135/cccc20060543.

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We report here a general method for the synthesis of new symmetrical bis-phosphonates of acyclic nucleosides. 1,3-Bis[(diisopropoxyphosphoryl)methoxy] derivatives of purine and pyrimidine bases were prepared by their reaction with 1,3-bis[(diisopropoxyphosphoryl)-methoxy]propan-2-yl tosylate. Cytosine, uracil and thymine provided regiospecificallyN1-isomers. This alkylation regiospecificity applies to several other tosylates of primary and secondary alcohols as well. 6-Chloropurine and 2-amino-6-chloropurine were alkylated in N9position. Resulting bis-phosphonates were converted to the respect
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9

Pirat, J. L., C. Brahic, C. Ciptadi, H. J. Cristau, A. Hervé, and D. Virieux. "Bis(hydroxymethyl)phosphine Oxides and Hydroxymethyl Phosphinic Acids as Phosphonic Acid Analogs." Phosphorus, Sulfur, and Silicon and the Related Elements 177, no. 8-9 (2002): 2221–22. http://dx.doi.org/10.1080/10426500213342.

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10

Justyna, Katarzyna, Joanna Małolepsza, Damian Kusy, Waldemar Maniukiewicz, and Katarzyna M. Błażewska. "The McKenna reaction – avoiding side reactions in phosphonate deprotection." Beilstein Journal of Organic Chemistry 16 (June 23, 2020): 1436–46. http://dx.doi.org/10.3762/bjoc.16.119.

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The McKenna reaction is a well-known and popular method for the efficient and mild synthesis of organophosphorus acids. Bromotrimethylsilane (BTMS) is the main reagent in this reaction, which transforms dialkyl phosphonate esters into bis(trimethylsilyl)esters, which are then easily converted into the target acids. However, the versatile character of the McKenna reaction is not always used to its full extent, due to formation of side products. Herein, demonstrated by using model examples we have not only analyzed the typical side processes accompanying the McKenna reaction, but also uncovered
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