Results 201 to 210 of about 29,315 (256)

New multifunctional phosphonic acid for metal phosphonate synthesis

Journal of Molecular Structure, 2013
Abstract A new heterotopic phosphonic acid, 3-amino-5-(dihydroxyphosphoryl)benzoic acid (1) has been synthesized and obtained in the crystalline form. Second multifunctional phosphonic acid – namely 3-(dihydroxyphosphoryl)-5-nitrobenzoic acid (2) has also been obtained, following a different synthetic route than previously reported.
Piotr Garczarek, Jan Janczak, Jerzy Zoń
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Phosphonic Aminocarboxylic Acids

Russian Journal of General Chemistry, 2018
Methods of synthesis of phosphonic aminocarboxylic acids, ω-phosphonic analogs of monoaminodicarboxylic acids, are reviewed. Many of such compounds are ligands of ionotropic and metabotropic glutamate receptors determining the phenomenon of information processing and communication in central nervous system, important in view of prevention and treatment
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Acid chlorides of unsaturated phosphonous acids

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1962
The dichloride of β-ethoxyvinyl-, β-isooctyloxyvinyl-, and 2-chloro-3-methylbut-3-enylphosphonous acids have been synthesized and characterized for the first time. The diethyl ester of β-ethoxyvinylphosphonous acid has been-obtained from the dichloride of β-ethoxyvinylphosphonous acid.
K. N. Anisimov, N. E. Kofobova
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Phosphonic acids and esters

Journal of Organometallic Chemistry, 1964
Abstract The Taft equation has been found to apply satisfactorily to the first and second dissociations of alkylphosphonic acids. Observed deviations may be attributed to steric inhibition of solvation and imply markedly different solvations for the mono- and di-anions; the reaction constants for the two di-ssociations are nearly identical. Attempted
D.J. Martin, C.E. Griffin
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Neuroexcitatory amino acids: phosphonic analogue of kainic acid

Amino Acids, 1992
The enantioselective synthesis of phosphonic analogue of kainic acid is described.
M, Tabcheh, L, Pappalardo, M L, Roumestant, P, Viallefont   +3 more
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Neuroactive properties of phosphonic amino acids

General Pharmacology: The Vascular System, 1979
Abstract 1. Several phosphonic analogues of excitatory and inhibitory ω-carboxylic amino acids were applied by microiontophoresis to rat cerebral and cerebellar neurones. We here show that ω-phosphonic amino acids are able to interact with either excitatory or inhibitory post-synaptic receptors of ω-carboxylic amino acids. 2.
B, Bioulac, E, de Tinguy-Moreaud, J D, Vincent, E, Neuzil   +3 more
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Nucleoside phosphonic acids III. A nucleoside phosphonic acid analog of UDP-glucose

Biochimica et Biophysica Acta (BBA) - General Subjects, 1970
Abstract This report describes the synthesis of analogs of UDP-glucose (UDP-Glc), UDP-galactose (UDP-Gal), and UDP-glucoronic acid which contain 5′-deoxyuridine 5′-phosphonic acid place of the nucleotide uridine 5′-phosphate. These substances have been tested as substrates for UDP-Glc dehydrogenase (EC 1.1.1.22), uridyl transferase (EC 2.7.7.9), and ...
P.C. Bax, F. Morris, D.H. Rammler
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Synthesis of trans-1,2-difluoroethenediylbis(phosphonic acid) and other unsaturated phosphonic acids

Journal of the American Chemical Society, 1990
Synthese de tetrafluoro-3,3,4,4 cyclobutene-1 (ou hexafluoro-3,3,4,4,5,5 cyclopentene-1 ou octafluoro cyclohexene-1) de phosphonique-1,2 acide et de difluoro-1,2 ethylenediphosphonique-1,2 acide a partir de la reaction de [bromo diethoxyphosphoryl fluoro] methyl sulfinate avec HO°.
Debao Su, Cai Yun Guo, Roger D. Willett, Brian Scott, Robert L. Kirchmeier, Jean'ne M. Shreeve   +5 more
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New Layered Metal Phosphonates Based on Functionalized Phosphonic Acids

Crystal Growth & Design, 2015
Hydrothermal reactions of ZnII or MnII ion with 1-C10H7-CH2N(CH2COOH)(CH2PO3H2)(H3L1), 3-HOOC-C6H4-CH2N(CH2COOH)(CH2PO3H2)(H4L2), and 4-HOOC-C6H4-CH2N(CH2COOH)(CH2PO3H2)(H4L3) afforded six new layered metal phosphonates, namely, [Zn3(HL1)3]·3H2O (1), [Zn(HL1)]·CH3COOH (2), [Zn(H2L2)] (3), [Mn(H3L2)2] (4), [Mn(H3L3)2] (5), and [Zn(H2L3)]·H2O (6 ...
Ruibiao Fu, Shengmin Hu, Xintao Wu
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ChemInform Abstract: REACTION OF EPOXIDES WITH PHOSPHONIC ACID MONOESTERS AND PHOSPHONIC ACIDS

Chemischer Informationsdienst, 1976
AbstractDie Phosphonsäureester (Ia) setzen sich mit Epoxiden, wie (II), zu Phosphonsäurealkyl‐ β‐hydroxyalkylestern, wie z.B. (IIIa) (die als Stellungsisomere in bezug auf die Positionen von R3 und R4 anfallen) um.
B. COSTISELLA, H. GROSS
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