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Pyridine, complex

Moody s synthesis of promothiocin 43 provided evidence that the Bohlmann-Rahtz method can be used for the rapid synthesis of complex pyridines. Oxazaole 44 was treated with alkynyl ketone 45 to afford 46 in 83% yield. The ester moiety of 46 was elaborated into a thiazole substituent providing entry into the northeast quadrant of 43. [Pg.310]

Before the immobilization of 7b on silica, the support was modified with 3-aminopropyltriethoxysilane (3-APTES) (14). For complex iimnobihzation 0.06 g of 7b was dissolved in pyridine (20 mL), and the mixtnre was stirred for 7 h at room temperatnre. A snspension of 1 g of amino-modified silica in pyridine (10 mL) was stirred for 5 min in a ronnd bottom flask then, the complex-pyridine mixtnre was... [Pg.437]

Complexes. Pyridine and related ligands. Recent Mossbauer studies suggested that [FeCl2(py)4] has a cis-octahedral structure however. X-ray studies have shown it to be isomorphous with trans-[MCl2(py)4] (M = Co or Ni). Magnetic and spectroscopic properties of [Fe(py)2(phen)(NCS)2] have been reported. An n.m.r. study of [FeL(PF )2] [L = (42)] shows the presence of both cis- and trans-isomers in solution.The methyl-substituted pyridyl-thiazoles (43) form the complexes [FeL2-X2],nH20 (X = Cl, Br, I. NO3,... [Pg.215]

The first studies on the sulfation of organic compounds, amino acids, and proteins have shown that pyridine/sulfur trioxide complex (pyridine/S03 or pyridine/Cl S03H),168-721 concentrated sulfuric acid,173,74 sulfuric acid//V,A -dicyclohexylcarbodiimide,175,761 and chloro-sulfonic acid177 are the most efficient reagents for the sulfation of tyrosine. More recently, alternative methods based on dimethylformamide/sulfur trioxide complex (DMF/S03),152,781 trimethylamine/sulfur trioxide (Me3N/S03),1152,1531 pyridinium acetylsulfate,137,791 and pyr-idinium trifluoroacetylsulfate1801 have been proposed to minimize side reactions which are difficult to control for the chemical sulfation of tyrosine peptides. [Pg.430]

Th.P. Rudy T.W. Nakagawa, USP 3442726(1969) CA 71, 3l965p(1969) (Particulate nitronium perchlorate coated with.a complex pyridine salt, suitable as a solid compatible oxidizer In various formulations, is described)... [Pg.602]

The synthesis of the poly-(o-chlorophenyl)-imides was accomplished in two steps involving low-temperature reaction between the diamines and bis(phthalic anhydrides) in NMP followed by catalytic imidisation of the PCA directly in the reaction solutions using the catalytic complex pyridine acetic anhydride. The synthesis of polyimides from l,l-dichloro-2,2-di-(3-amino-4-aminophenyl)-ethylene proceeded homogeneously throughout the course of the reaction, as did reactions of 3,3 -diamino-4,4 -dichlorobenzophenone with the dianhydride of diphenyloxide-3,3, 4,4 -tetracarboxylic acid. As to reactions of 3,3 -diamino-4,4 -dichlorobenzophenone with the dianhydrides of pyromellitic and diphenylsulfone-3,3, 4,4 -tetracarboxylic acids, these were homogeneous at the PCA formation step but heterogeneous at the polyimide formation step. Some properties of these polyimides are given in Tables 3.3 and 3.4. [Pg.16]

At -107°C, reaction of hexafluoroacetone-complexed pyridine with LiTMP followed by MeOD as the electrophile gave 90% C-2 deuteriation, whereas at -78°C, C-2 (48%) and C-4 (28%) deuterium incorporation was observed. [Pg.274]

PhlO, cat chiral Mn salen complex, pyridine N-oxide (enantioselective)... [Pg.921]

Frey PA (1987) Complex pyridine-dependent transformations. In Dolphin D, Poulson R, Avamovic O (eds) Pyridine nucleotide coenzymes Chemical biochemical, medical aspects Vol 2B. Wiley, New York, 462... [Pg.144]

Using a benzene-diazonium borofluoride pyridine molar ratio of 1 6. The reaction mixture is heterogeneous under these conditions. An intramolecular attack of the complexed pyridine nucleus may well be involved here. [Pg.322]

Table 22 Structures Six-membered N-Heterocyclic Complexes (Pyridine, Pyrazine, Bipyridyl, Phenanthroline... Table 22 Structures Six-membered N-Heterocyclic Complexes (Pyridine, Pyrazine, Bipyridyl, Phenanthroline...
Incorporation of Metal-Pyridine Ligand Complexes Pyridine Complexes... [Pg.636]

Magnanini studied the absorption spectrum and A. Speransky found that the electrical conductivity of aq. soln. shows that only a small proportion of the salt is ionized. The soln. of the violet modification conducts electricity three times better than that of the green. G. Gore electrolyzed a cone. soln. of chromic fluoride acidified with hydrofluoric and hydrochloric acids, and found that the liquid became hot no gas was liberated at the cathode, but chlorine and ozone were liberated at the platinum anode which was not corroded. C. Poulenc showed that the salt is reduced by hydrogen at dull redness. The heat of formation is 230-95 Cals, per mol—vide infra, the dichloride. Steam transforms chromic fluoride into chromic oxide. Chromic fluoride is insoluble in water, and alcohol hydrogen chloride transforms it into chromic chloride hot hydrochloric, sulphuric, and nitric acids attack chromic fluoride only a little hydrogen sulphide converts it into black sulphide and molten alkali nitrate or carbonate converts it into chromate. A. Costachescu prepared complex pyridine salts. [Pg.241]


See other pages where Pyridine, complex is mentioned: [Pg.249]    [Pg.133]    [Pg.56]    [Pg.432]    [Pg.580]    [Pg.149]    [Pg.125]    [Pg.127]    [Pg.112]    [Pg.19]    [Pg.72]    [Pg.231]    [Pg.370]    [Pg.257]    [Pg.299]    [Pg.1388]    [Pg.195]    [Pg.39]    [Pg.758]    [Pg.501]    [Pg.259]    [Pg.51]    [Pg.1387]    [Pg.167]    [Pg.3307]    [Pg.213]   
See also in sourсe #XX -- [ Pg.361 ]

See also in sourсe #XX -- [ Pg.199 ]




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2,6-Dicarboxylate pyridine, complexes

2- pyridine complexes structure

2- pyridine reaction with platinum complexes

2- pyridine ruthenium complexes

2- pyridine with ruthenium complexes

2- pyridine, reaction complexes

2- pyridine, reaction with ruthenium complexes

2.4.6- Trivinylcyclotriboroxane-pyridine complex

4- pyridine, reaction with iron complexes

Acid/pyridine complexation, hydrogen bonding

Actinide complexes pyridines

Barium complexes pyridine oxide

Beneficial Micro Reactor Properties for Ni-Pyridine Complex Formations

Benzoyl chloride-pyridine complex

Bis (imino) pyridine Iron Complexes

Bond lengths pyridine complexes

Boron complexes pyridine oxide

Boron complexes, cationic with pyridine

Boron complexes, cations, with pyridine

Bromine complex compounds cations, with pyridine

CHROMIUM TRIOXIDE-PYRIDINE COMPLEX, preparation in situ

Cadmium complexes pyridine oxide

Calcium complexes pyridine oxide

Calcium complexes pyridines

Carbene complexes with pyridine

Charge-transfer complexes pyridine-halogen

Chromic oxide complexes with pyridine

Chromium complex compounds with pyridine

Chromium trioxide-pyridine complex

Chromium trioxide-pyridine complex Collins reagent)

Chromium trioxide-pyridine complex oxidant

Chromium trioxide-pyridine complex preparation

Cobalt complex compounds with pyridine

Cobalt complex compounds, anions with pyridine

Cobalt complexes pyridine

Complex heterocycles synthesis, pyridine

Complexation with pyridine

Complexes with Amine, Pyridine, and Stilbazole Ligands

Copper complexes pyridine oxide

Copper-pyridine complex

Cupric nitrate-Pyridine complex

Drivers for Performing Ni-Pyridine Complex Formations in Micro Reactors

Ferrocenyl complex, pyridine

Gallium complexes pyridine

Gold complexes pyridines

Halogens, complexation with pyridines

Hydrogen fluoride pyridine complex

II) Halide-Pyridine Complexes

Indium complexes pyridines

Iodine complex compounds, with pyridine

Iridium complex compounds anions, with pyridine, cis- and

Iridium complex compounds nonelectrolytes, with pyridine

Iridium complex compounds with pyridine, cis- and trans

Iridium pyridine-based complexes

Iron complex compounds cations, with pyridine

Iron complex compounds, anions with pyridine

Iron complexes pyridine

Iron complexes, nonelectrolytes with pyridine and isothiocyanate

Lanthanide complexes pyridine oxides

Lewis acid complexation with pyridines

Magnesium complexes pyridine oxide

Manganese complexes pyridine

Manganese complexes pyridine oxides

Manganese complexes, cation nonelectrolyte, with pyridine and

Mercury complexes pyridine oxide

Molecular complexes bromine-pyridine

Molybdenum carbonyl complexes pyridine

Ni-Pyridine Complex Formations Investigated in Micro Reactors

Nickel complexes, reaction with pyridines

Nickel-Pyridine complexes

Of pyridine complexes

Organometallic complexes pyridine

Osmium complexes, reaction with pyridines

Osmium tetroxide-pyridine complexes

Oxidation with Chromium Trioxide-Pyridine Complex

Palladium complexes pyridine ligands

Palladium complexes pyridine oxides

Pincer-pyridine complexes

Platinum complex compounds with pyridine

Platinum complex compounds with pyridine, cis- and trans

Platinum complexes pyridine

Pyridine N-oxide complexes

Pyridine and Imine Complexes

Pyridine based complexes

Pyridine boron trifluoride complex

Pyridine chemisorption, complexes

Pyridine chromium tricarbonyl complexes

Pyridine complex with

Pyridine complex with borane

Pyridine complex with chromium trioxide (Collins

Pyridine complexes Ruthenium blues

Pyridine complexes electrolysis

Pyridine complexes linkage isomers

Pyridine complexes with boron

Pyridine complexes with metals

Pyridine complexes, lanthanide

Pyridine complexes, polymer-bound

Pyridine cyclodextrin inclusion complexes with

Pyridine derivatives complexes

Pyridine dipyridine complex

Pyridine hexafluoroacetone complex

Pyridine hexafluoroacetone complex lithiation

Pyridine iridium complexes

Pyridine molecular complex with bromine

Pyridine molybdenum complex

Pyridine nucleotide coenzymes, complexes

Pyridine nucleotide complexes

Pyridine oxide complexes

Pyridine oxide complexes, osmium

Pyridine polynuclear complexes

Pyridine sulfur trioxide complex ring opening

Pyridine sulphur trioxide complex

Pyridine transition metal complexes

Pyridine, 2- -, palladium complex

Pyridine, 2- 1-oxide metal complexes

Pyridine, 2-vinylhydroesterification catalysts, cobalt complexes

Pyridine, 3,5-dimethyl-, palladium complex

Pyridine, 3-bromo-, complex with

Pyridine, 4-substituted, complexes with

Pyridine, complex cations, with

Pyridine, complex cations, with chromium

Pyridine, complex cations, with iron

Pyridine, complexes with boron metals

Pyridine, complexes with non-metals—contd localization energies

Pyridine, complexes, with iridium

Pyridine, cyclodextrin inclusion complexes

Pyridine, methyl-2- metal complexes

Pyridine, osmium complex

Pyridine, reaction with rhenium complexes

Pyridine-2-carbaldehyde metal complexes

Pyridine-2-carboxamide metal complexes

Pyridine-2-carboxylic acid, formation metal complexes

Pyridine-2-sulfonic acid metal complexes

Pyridine-2-thiol, complexes with

Pyridine-2-thiol, complexes with complex

Pyridine-3,5-dicarboxylic acid, reaction complexes

Pyridine-Cu complex

Pyridine-SO3 complex

Pyridine-borane complex

Pyridine-bridged supramolecular complexes

Pyridine-derived transition metal complexes

Pyridines complexation

Pyridines complexation

Pyridines early transition metal complexes, reaction

Pyridines metal complexes

Pyridines, tetrahydrocarbene complexes

Pyridines, tetrahydrocarbene complexes reactions with diphenylacetylene

Pyridines, tetrahydrocarbene complexes synthesis

Pyridines, tetrahydrocarbene complexes via Diels-Alder reactions

Pyridine—halogen complexes, dissociation

Rare Earth Complexes with Pyridine Type Ligands

Rhenium complexes pyridines

Sarett oxidation chromium oxide/pyridine complex

Scandium complexes pyridine

Silver complex compounds, cations with pyridine

Silver complexes pyridines

Stability constants pyridine derivative complexes

Sulfur trioxide pyridine complex

Sulfur trioxide-pyridine complex/DMSO

Tantalum complexes, reaction with pyridines

Thallium complexes pyridines

Thorium complexes pyridine oxide

Titanium complexes, reaction with pyridines

Transition metals, complexes with pyridines

Tricarbonylchromium complexes pyridine

Vanadium complexes pyridine

With chromium trioxide-pyridine complex

Zirconium complexes pyridine

Zirconium complexes pyridine oxide

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