2439-99-8Relevant articles and documents
Efficient dehydration of carbohydrates to 5-hydroxymethylfurfural in ionic liquids catalyzed by tin(IV) phosphonate and zirconium phosphonate
Ning, Hui,Song, Jinliang,Hou, Minqiang,Yang, Dezhong,Fan, Honglei,Han, Buxing
, p. 1578 - 1585 (2013)
In this work, we synthesized tin(IV) phosphonate (SnBPMA) and zirconium phosphonate (ZrBPMA) by the reaction of SnCl4·5H2O or ZrOCl2·8H2O with N,N-bis(phosphonomethyl) aminoacetic acid, which was synthesized from a biomaterial glycine through a Mannich-type reaction. The SnBPMA and ZrBPMA were very efficient heterogeneous catalysts for the dehydration of fructose to produce 5-hydroxymethylfurfural (HMF), and the SnBPMA had higher activity than the ZrBPMA. The effects of solvents, temperature, reaction time, and reactant/solvent weight ratio on the reaction catalyzed by SnBPMA were investigated. It was demonstrated that the yield of HMF could reach 86.5% with 1-ethyl-3-methylimidazolium bromide ([Emim] Br) as solvent, and the SnBPMA and SnBPMA/[Emim]Br catalytic system could be reused five times without considerable reduction in catalytic efficiency. Further study indicated that the SnBPMA and ZrBPMA in [Emim]Br were also effective for the dehydration of sucrose and inulin to produce HMF with satisfactory yields.
A layered mixed zirconium phosphate/phosphonate with exposed carboxylic and phosphonic groups: X-ray powder structure and proton conductivity properties
Donnadio, Anna,Nocchetti, Morena,Costantino, Ferdinando,Taddei, Marco,Casciola, Mario,Da Silva Lisboa, Fbio,Vivani, Riccardo
, p. 13220 - 13226 (2014)
A novel mixed zirconium phosphate/phosphonate based on glyphosine, of formula Zr2(PO4)H5(L)2·H2O [L = (O3PCH2)2NCH2COO], was synthesized in mild conditions. The compound has a layered structure that was solved ab initio from laboratory PXRD data. It crystallizes in the monoclinic C2/c space group with the following cell parameters: a = 29.925(3), b = 8.4225(5), c = 9.0985(4) ?, and β = 98.474(6)°. Phosphate groups are placed inside the sheets and connect the zirconium atoms in a tetradentate fashion, while uncoordinated carboxylate and P-OH phosphonate groups are exposed on the layer surface. Due to the presence of these acidic groups, the compound showed remarkable proton conductivity properties, which were studied in a wide range of temperature and relative humidity (RH). The conductivity is strongly dependent on RH and reaches 1 × 10-3 S cm-1 at 140 °C and 95% RH. At this RH, the activation energy of conduction is 0.15 eV in the temperature range 80-140 °C. The similarities of this structure with related structures already reported in the literature were also discussed.
Hydrothermal synthesis, characterization and crystal structures of two new zinc(II) phosphonates: Zn2[(O3PCH2)2NHCH2CO 2] and Zn2[HO3PCH2NH(CH2PO3) 2]
Mao, Jiang-Gao,Wang, Zhike,Clearfield, Abraham
, p. 1010 - 1014 (2002)
The hydrothermal reaction of zinc(II) acetate with N,N-bis(phosphonomethyl)aminoacetic acid [(H2O3PCH2)2NCH2CO 2H, H5L1] and nitrilotris(methylenephosphonic acid) [N(CH2PO3H2)3, H6L2] at 180°C afforded two new zinc coordination polymers with a similar 3D network structure. Zn2[(O3PCH2)2NHCH2CO 2] (complex 1) is hexagonal, P61, with a = 8.0677(12), c = 27.283(6) A, u = 1537.9(5) A3, Z = 6. In complex 1, the Zn(II) atoms are tetrahedrally coordinated by three phosphonate oxygen atoms and one carboxylate oxygen atom from four ligands. The ZnO4 tetrahedra are further interconnected through bridging phosphonate and carboxylate groups into a three dimensional network. Zn2[HO3PCH2NH(CH2PO3) 2] (complex 2) is also hexagonal, P61 with a = 8.3553(8), c = 26.657(4) A, u = 1611.6(3) A3, Z = 6. The structure of complex 2 features a 3D network built from ZnO4 tetrahedra linked together by bridging phosphonate groups. One zinc and three phosphonate oxygen atoms are disordered. The two zinc atoms in the asymmetric unit are tetrahedrally coordinated by four phosphonate oxygen atoms of four ligands. Each ligand connects with eight zinc atoms. The effect of the extent of deprotonation of phosphonic acids and substitution groups on the type of complexes formed are discussed.
Metal phosphonates based on {[(benzimidazol-2-ylmethyl)imino]bis- (methylene)}bis(phosphonic acid): Syntheses, structures and magnetic properties of the chain compounds [M{(C7H5N2)CH 2N(CH2PO3H)2}] (M = Mn, Fe, Co, Cu, Cd)
Cao, Deng-Ke,Xiao, Jing,Li, Yi-Zhi,Clemente-Juan, Juan Modesto,Coronado, Eugenio,Zheng, Li-Min
, p. 1830 - 1837 (2006)
Five compounds based on {[(benzimidazol-2-ylmethyl)imino-]bis(methylene)} bis(phosphonic acid) [(C7H5N2)CH 2N(CH2-PO3H2)2], namely [M{(C7H5N2)CH2N(CH 2PO3H)2}] [M = Mn (1), Fe (2), Co (3), Cu (4), Cd (5)] have been synthesized under hydrothermal conditions. These compounds are isostructural, crystallizing in the orthorhombic space group Pbca, with a = 15.331(2), b = 10.7150(16), and c = 16.715(2) A for 1; a = 15.320(3), b = 10.477(2), and c = 16.764(3) A for 2; a = 15.207(2), b = 10.4626(16), and c = 16.794(3) A for 3; a = 15.101(3), b = 10.3517(17), and c = 16.997(3) A for 4; and a = 15.4679(19), b = 10.8923(13), and c = 16.6175(19) for 5. Each compound shows a one-dimensional chain structure where {MO 3N2} trigonal bipyramids are connected by {CPO 3} tetrahedra through corner-sharing. The chains are further connected to each other through aromatic stacking of the benzimidazole rings and extensive hydrogen bonds, forming a supramolecular 3D structure. Magnetic susceptibility studies of 1-4 reveal that weak antiferromagnetic interactions occur between the metal centers. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
Glyphosate alkaline mother liquor processing method
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Paragraph 0015-0017, (2017/01/17)
The invention discloses a treatment method of a glyphosate alkaline mother solution, which comprises the following steps that: a hydrochloric acid is added to the mother solution to adjust the pH of the solution to 1-5 to obtain a solution A; the solution A is subjected to membrane separation to obtain a solution B and a sodium chloride solution, and the sodium chloride solution is evaporated to obtain a saturated solution; and the saturated sodium chloride solution is subjected to the Hou soda process to obtain sodium carbonate to be recycled. The treatment method is characterized in that the solution B is concentrated to make the concentration of a solute in the solution B increase to 3-10 times, i.e. a solution C, and then the appropriate amount of glycine and formaldehyde is added to the solution C, so that glyphosate and phosphorous acid in the solution C are reacted completely to obtain glyphosine and the original glyphosine in the solution C; and the glyphosine is neutralized, leached and dried and the like to obtain a glyphosine solid to be recycled. The treatment method has the advantages that the glyphosate, the glyphosine, sodium hypophosphite and the sodium chloride in the glyphosate alkaline mother solution are fully recycled, the waste is reduced, the pollution is reduced, and the utilization rate of the alkaline mother solution is improved.
Synthesis of bis- and tris-organophosphorus substituted amines and amino acids with PCH2N Fragments
Prishchenko, Andrey A.,Livantsov, Mikhail V.,Novikova, Olga P.,Livantsova, Ludmila I.,Petrosyan, Valery S.
experimental part, p. 430 - 440 (2011/07/29)
The aminomethylation of the derivatives of trivalent organophosphorus acids, containing PH and POSiMe3 fragments with various bis- and tris(alkoxymethyl)amines and bis(alkoxymethyl)amino acids, is proposed as a convenient method for the synthesis of new bis- and trisphosphorylated amines and amino acids as well as their derivatives with four and five coordinated phosphorus. Also the three-components systems of phosphorous acid, paraformaldehyde, and amines are thoroughly investigated via the treatment of reaction mixtures with bis(trimethylsilyl)amine.
METHOD FOR THE MANUFACTURE OF AMINO ALKYLENE PHOSPHONIC ACIDS
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Page/Page column 15, (2010/12/26)
A method for the manufacture of aminoalkylene phosphonic acids broadly is disclosed. In the essence, an amine corresponding to a specific formula is reacted in aqueous medium with phosphorous acid and formaldehyde to thereby yield a medium insoluble reaction product. The insoluble product formed i.e. the aminoalkylene phosphonic acid can be separated, optionally washed, and recovered. This process yields high purity and selectivity reaction products. The excess phosphonic acid can be recycled into the processing sequence.
Use of Dendrimers to Stimulate Cell Growth
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Page/Page column 116, (2009/06/27)
The present invention relates to the use of dendrimers with monophosphonic or bisphosphonic terminations in order to stimulate the growth of cell cultures or to activate cells in culture.
PURIFICATION OF N-(PHOSPHONOMETHYL)GLYCINE
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Page/Page column 4, 7, (2008/06/13)
The present invention is a process for the purification of glyphosate (PMG) comprising: 1) dissolving or suspending a material comprising PMG in water, in the presence of a base, to produce a composition comprising a PMG salt in an aqueous base, contacting the composition with an acid, such that the PMG salt is neutralized, forming a precipitate of PMG, and 3) isolating the precipitate of PMG. with the proviso that the composition of step 1) is not concentrated or filtered using a nanofiltration membrane.
Process for the preparation of N-phosphonomethylglycine and derivatives thereof
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Page/Page column 30, (2010/02/11)
N-phosphonomethylamines are produced by reaction of an amine substrate with a halomethylphosphonic acid or salt thereof, a hydroxymethylphosphonic acid or salt thereof, or a dehydrated self-ester dimer, trimer or oligomer of hydroxymethylphosphonic acid. Among the products that may be prepared according to the process are N-phosphonomethylaminocarboxylic acids such as (e.g.) glyphosate, N-phosphonomethylaminoalkanols such as (e.g.) hydroxyethlaminomethylphosphonic acid, and N-acylaminomethylphosphonic acids such as (e.g.) N-carbamylaminomethylphosphonic acid. Certain reactions are conducted with a substantial excess of amine reactant in order to drive the conversion while avoiding excessive formation of bis(N-phosphonomethyl)amine by-products. Other reactions use a secondary amine substrate (such as iminodiacetic acid) and can be conducted at substantial equimolar ratios of halomethylaminomethylphosphonic acid or hydroxyaminomethylphosphonic acid to secondary amine reactant without significant formation of bis(phosphonomethyl)amine by-products. Further disclosed is a process for the preparation of hydroxymethylphosphonic acid self-ester dimers, trimers and oligomers by azeotropic dehydration.
