Search Within
Applied Filters:
Showing 1-25 of 25 results for "


" within Papers
M Kai et al.
Journal of chromatography. B, Biomedical sciences and applications, 720(1-2), 25-31 (1999-01-19)
A pre-column derivatization method using a fluorogenic reagent, 1,2-diphenylethylenediamine (DPE) was studied for the sensitive HPLC determination of 5-hydroxytryptamine (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA), which are biosubstances used in the diagnosis of several diseases. For the quantitative determination, the biogenic
A Mitsui et al.
Journal of chromatography, 344, 61-70 (1985-11-08)
A simple, rapid and highly sensitive method for the determination of catecholamines (norepinephrine, epinephrine and dopamine) in human plasma is described which employs high-performance liquid chromatography with fluorescence detection. After cation-exchange chromatography on a Toyopak SP cartridge, the catecholamines and
Kaoru Fujino et al.
Journal of chromatography. A, 1012(2), 169-177 (2003-10-03)
A highly selective and sensitive method for the simultaneous determination of 5-hydroxyindoles and catechols (serotonin, norepinephrine, dopamine and related compounds) by high-performance liquid chromatography with fluorescence detection is described. The method is based on the two-step precolumn derivatization of 5-hydroxyindoles
Tharanga Payagala et al.
Analytical and bioanalytical chemistry, 399(7), 2445-2461 (2011-01-05)
Three new polymeric chiral stationary phases were synthesized based on (1S,2S)-1,2-bis(2,4,6-trimethylphenyl)ethylenediamine, (1S,2S)-1,2-bis(2-chlorophenyl)ethylenediamine, and (1S,2S)-1,2-di-1-naphthylethylenediamine via a simple free-radical-initiated polymerization in solution. These monomers are structurally related to (1S,2S)-1,2-diphenylethylenediamine which is the chiral monomer used for the commercial P-CAP-DP polymeric chiral
Chuan-Qi Yin et al.
Chirality, 20(7), 846-855 (2008-04-03)
Four dendrimers were synthesized on aminopropyl-modified silica gel using methyl acrylate and ethylene diamine as building blocks by divergent method. Four generations of chiral stationary phases (CSPs) were prepared by coupling of L-2-(p-toluenesulfonamido)-3-phenylpropionyl chloride to corresponding dendrimers. The derivatives prepared
J. Korean Chem. Soc., 36, 872-872 (1992)
Feng Yu et al.
Chemical communications (Cambridge, England), 46(25), 4589-4591 (2010-05-21)
An unprecedented enantioselective Michael addition of various ketones to maleimides catalyzed by a simple bifunctional primary amine, monosulfonyl DPEN salt, is reported and provides the desired adducts in good to excellent yields (up to 99%) with excellent enantioselectivities (up to
Takashi Yoshitake et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 807(2), 177-183 (2004-06-19)
A highly selective and sensitive column liquid chromatographic method for fluorescence determination of serotonin (5-HT), dopamine (DA), noradrenaline (NA) and their related metabolites 5-hydroxyindole-3-acetic acid (5-HIAA) and 3,4-dihydroxyphenylacetic acid (DOPAC) following derivatization with benzylamine and 1,2-diphenylethylenediamine (DPE) is described. The
Maj-Len Henriks-Eckerman et al.
Toxicology letters, 232(3), 595-600 (2014-12-30)
The causal relationship between inhalation exposure to methylenediphenyl diisocyanate (MDI) and the risk of occupational asthma is well known, but the role of dermal exposure and dermal uptake of MDI in this process is still unclear. The aims of this
Shao-Hua Huang et al.
Chirality, 19(2), 129-140 (2006-11-23)
Two new chiral polymers of different molecular weights were synthesized by the copolymerization of (1R,2R)-(+)-1,2-diphenylethylenediamine, phenyl diisocyanate and terephthaloyl chloride. The polymers were immobilized on aminated silica gel to afford two chiral stationary phases. The polymers and the corresponding chiral
Yoshitane Imai et al.
Chemical communications (Cambridge, England), (10)(10), 1070-1072 (2006-03-04)
By using (1R,2R)-1,2-diphenylethylenediamine as a single enantiopure compound, we achieved a novel successive optical resolution of more than one kind of racemic compound through supramolecular crystallization.
Synthesis of cyclic poly (methyl methacrylate) by the intramolecular cyclization of α-amino, ω-carboxyl heterodifunctional poly (methyl methacrylate)
Kubo M, et al.
Polymer Bull., 47(1), 25-30 (2001)
P J Bednarski et al.
Drug metabolism and disposition: the biological fate of chemicals, 22(3), 419-427 (1994-05-01)
The cisplatin analog [meso-1,2-bis(2,6-dichloro-4-hydroxyphenyl) ethylenediamine]dichloroplatinum(II) [PtCl2(1)], by virtue of its estrogenic 1,2-diphenylethylenediamine ligand 1, was intended to function as a cytotoxic estrogen. This article reports on the reversible and irreversible interactions of this compound with plasma and plasma proteins in
Irina L Tourkova et al.
Laboratory investigation; a journal of technical methods and pathology, 97(9), 1072-1083 (2017-07-25)
To improve definition of the physical and hormonal support of bone formation, we studied differentiation of human osteoblasts in vitro at varying combinations of ACTH, 1α,25-dihydroxyvitamin D
Chemische Berichte, 86, 1463-1463 (1953)
Robert N Garner et al.
Inorganic chemistry, 50(10), 4384-4391 (2011-04-21)
The series of complexes [Ru(bpy)(2)(L)](2+), where bpy = 2,2'-bipyridine and L = 3,6-dithiaoctane (bete, 1), 1,2-bis(phenylthio)ethane (bpte, 2), ethylenediamine (en, 3), and 1,2-dianilinoethane (dae, 4), were synthesized, and their photochemistry was investigated. Photolysis experiments show that the bisthioether ligands in
M Noji et al.
Chemico-biological interactions, 51(1), 37-48 (1984-09-01)
A series of Pt(II) complexes containing 1,2-diphenylethylenediamine (stien) isomers were synthesized and tested for their antitumor activity against leukemia L1210. Among the Pt(II) complexes examined water-soluble Pt(II) complexes with sulfate, nitrate and D-glucuronate ions as leaving groups exhibited relatively high
A general and versatile approach to thermally generated N-heterocyclic carbenes
Nyce GW, et al.
Chemistry?A European Journal , 10(16), 4073-4079 (2004)
Spectrofluorometric determination of catechins with 1,2-diphenylethylenediamine.
Hiroaki Nagaoka et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 18(8), 951-953 (2002-08-31)
Yangzhou Li et al.
Organic & biomolecular chemistry, 3(14), 2513-2518 (2005-07-07)
Polymer-supported chiral ligands 9 and 17 were prepared based on Noyori's (1S,2S)- or (1R,2R)-N-(p-tolylsulfonyl)-1,2-diphenylethylenediamine. The combination with [RuCl2(p-cymene)]2 has been shown to exhibit high activities and enantioselectivities for heterogeneous asymmetric transfer hydrogenation of aromatic ketones (19a-c) with formic acid-triethylamine azeotrope
Determination of plasma catecholamines via condensation with diphenylethylenediamine: simplification of the procedure.
P Husek et al.
Journal of chromatography, 533, 166-170 (1990-11-30)
High-performance liquid chromatographic determination of urinary catecholamines by direct pre-column fluorescence derivatization with 1,2-diphenylethylenediamine.
H Nohta et al.
Journal of chromatography, 380(1), 229-231 (1986-07-11)
Yoshitane Imai et al.
Organic letters, 10(3), 469-471 (2008-01-11)
In a two-component columnar host system composed of racemic (rac)-1,2-diphenylethylenediamine and rac-1,1'-binaphthyl-2,2'-dicarboxylic acid, a cavity tuning mechanism resulted from changes in the structure of the columns using a specific combination of the following four molecules: (1R,2R)-1, (1S,2S)-1, (R)-2, and (S)-2.
Synthesis and spectroscopic investigation of some nickel (II) chelates containing β-ketoenolates and N,N′-diphenylethylenediamine
Tsiamis C and Themeli M
Polyhedron, 13(2), 281-289 (1994)
Wen-Juan Wei et al.
Chirality, 22(6), 604-611 (2009-11-10)
L-Dibenzoyl tartaric acid was mono-esterified with benzyl alcohol, and then chlorinated with SOCl(2) to give (2S,3S)-1-(benzyloxy)-4-chloro-1,4-dioxobutane-2,3-diyl dibenzoate (Selector 1). (1R,2R)-1,2-Diphenylethylenediamine was mono-functionalized with phenyl isocyanate and phenylene diisocyanate in sequence to give (1R,2R)-1,2-diphenyl-2-(3-phenylureido)ethyl 4- isocyanatophenylurea (Selector 2). Two brush-type chiral
Page 1 of 1
Page 1 of 1