Search Results - "Cheprakov, Andrei V."

The Complementary Competitors: Palladium and Copper in C–N Cross-Coupling Reactions by Beletskaya, Irina P, Cheprakov, Andrei V

“…The C–N cross-coupling chemistry intensely developed since the late 1990s has supplied synthesists with an overwhelming number of methods to effectively…”
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The Palladium Slow-Release Pre-Catalysts and Nanoparticles in the "Phosphine-Free" Mizoroki-Heck and Suzuki-Miyaura Reactions by Sigeev, Alexander S., Peregudov, Alexander S., Cheprakov, Andrei V., Beletskaya, Irina P.

“…The Mizoroki–Heck reaction of electron‐rich aryl iodides was studied using a phosphine‐free catalytic system with a broad range of pre‐catalysts of varied…”
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The Heck Reaction as a Sharpening Stone of Palladium Catalysis by Beletskaya, Irina P, Cheprakov, Andrei V

“…Among basic types of palladium-catalyzed transformations, the Heck reaction and related chemistry occupy a special place. Beletskaya and Cheprakov attempt to…”
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Effects of Structural Deformations on Optical Properties of Tetrabenzoporphyrins: Free-Bases and Pd Complexes by Lebedev, Artem Y, Filatov, Mikhail A, Cheprakov, Andrei V, Vinogradov, Sergei A

“…A recently developed method of synthesis of π-extended porphyrins made it possible to prepare a series of tetrabenzoporphyrins (TBP) with different numbers of…”
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Highly Non-Planar Dendritic Porphyrin for pH Sensing: Observation of Porphyrin Monocation by Thyagarajan, Sujatha, Leiding, Thom, Årsköld, Sindra Peterson, Cheprakov, Andrei V, Vinogradov, Sergei A

“…Metal-free porphyrin-dendrimers provide a convenient platform for the construction of membrane-impermeable ratiometric probes for pH measurements in…”
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Tetraaryltetraanthra[2,3]porphyrins: Synthesis, Structure, and Optical Properties by Filatov, Mikhail A, Baluschev, Stanislav, Ilieva, Iliyana Z, Enkelmann, Volker, Miteva, Tzenka, Landfester, Katharina, Aleshchenkov, Sergey E, Cheprakov, Andrei V

“…A synthetic route to symmetrical tetra­aryl­tetra­anthra[2,3]porphyrins (Ar4TAPs) was developed. Ar4TAPs bearing various substituents in meso-phenyls and…”
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Synthesis and Luminescence of Soluble meso-Unsubstituted Tetrabenzo- and Tetranaphtho[2,3]porphyrins by FINIKOVA, Olga S., CHEPRAKOV, Andrei V., VINOGRADOV, Sergei A.

“…[Structure: see text]. Syntheses of soluble tetrabenzoporphyrins (TBP) and tetranaphtho[2,3]porphyrins (TNP), with multiple substituents in the conjugated…”
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Unusual Reactivity and Metal Affinity of Water-Soluble Dipyrrins by El Khatib, Mirna, Cheprakov, Andrei V., Vinogradov, Sergei A.

“…Dipyrrins are a versatile class of organic ligands capable of fluorogenic complexation of metal ions. The primary goal of our study was to evaluate dipyrrins…”
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Synthesis of Symmetrical Tetraaryltetranaphtho[2,3]porphyrins by Finikova, Olga S, Aleshchenkov, Sergei E, Briñas, Raymond P, Cheprakov, Andrei V, Carroll, Patrick J, Vinogradov, Sergei A

“…A new method of synthesis of meso-tetraaryltetranaphtho[2,3]porphyrins (Ar4TNP) has been developed. Ar4TNPs with peripheral functional groups are obtained by…”
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Novel Route to Functionalized Tetraaryltetra[2,3]naphthaloporphyrins via Oxidative Aromatization by Finikova, Olga S, Cheprakov, Andrei V, Carroll, Patrick J, Vinogradov, Sergei A

“…A novel general route to substituted meso-tetraaryltetra[2,3]naphthaloporphyrins (Ar4TNP) and meso-tetraaryloctamethoxytetra[2,3]naphthaloporphyrins…”
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Influence of Nonplanarity and Extended Conjugation on Porphyrin Basicity by Finikova, Olga S, Cheprakov, Andrei V, Carroll, Patrick J, Dalosto, Sergio, Vinogradov, Sergei A

“…Thermodynamic basicities of several new nonplanar water soluble tetraaryltetracyclohexano- (Ar4TCHP) and tetraaryltetrabenzoporphyrins (Ar4TBP) have been…”
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Dendritic Phosphorescent Probes for Oxygen Imaging in Biological Systems by Lebedev, Artem Y, Cheprakov, Andrei V, Sakadžić, Sava, Boas, David A, Wilson, David F, Vinogradov, Sergei A

“…Oxygen levels in biological systems can be measured by the phosphorescence quenching method using probes with controllable quenching parameters and defined…”
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Protonation of Planar and Nonplanar Porphyrins: A Calorimetric and Computational Study by Ballester, Maria, Ravotto, Luca, E. Quirke, J. Martin, López de la Vega, R, Shelnutt, John A, Cheprakov, Andrei V, Vinogradov, Sergei A, Medforth, Craig J

“…Herein, we report the first calorimetric study of the protonation of planar and nonplanar free-base porphyrins: H2OETPP (strongly saddled by its substituents),…”
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π-Extended Dipyrrins Capable of Highly Fluorogenic Complexation with Metal Ions by Filatov, Mikhail A, Lebedev, Artem Y, Mukhin, Sergei N, Vinogradov, Sergei A, Cheprakov, Andrei V

“…The synthesis and properties of a new family of π-extended dipyrrins capable of forming brightly fluorescent complexes with metal ions are reported. The metal…”
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The synthesis of new tetrabenzo- and tetranaphthoporphyrins via the addition reactions of 4,7-dihydroisoindole by Filatov, Mikhail A., Cheprakov, Andrei V.

“…The double bond in 4,7-dihydroisoindole derivatives was shown to be a useful reaction site to afford new porphyrinogenic pyrrolic precursors bearing…”
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Synthesis of 5,15-Diaryltetrabenzoporphyrins by Filatov, Mikhail A, Lebedev, Artem Y, Vinogradov, Sergei A, Cheprakov, Andrei V

“…A general method of synthesis of 5,15-diaryltetrabenzoporphyrins (Ar2TBPs) has been developed, based on 2 + 2 condensation of dipyrromethanes followed by…”
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A Facile and Reliable Method for the Synthesis of Tetrabenzoporphyrin from 4,7-Dihydroisoindole by Filatov, Mikhail A., Cheprakov, Andrei V., Beletskaya, Irina P.

“…A new route to tetrabenzoporphyrins from the closest possible precursor of the unstable isoindole was developed. A key feature of this route is a dramatic…”
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Novel Versatile Synthesis of Substituted Tetrabenzoporphyrins by Finikova, Olga S, Cheprakov, Andrei V, Beletskaya, Irina P, Carroll, Patrick J, Vinogradov, Sergei A

“…A novel general synthetic route to tetraaryltetrabenzoporphyrins (Ar4TBP) with various peripheral functional groups is developed. The procedure includes (i)…”
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NC-palladacycles as highly effective cheap precursors for the phosphine-free Heck reactions by Beletskaya, Irina P., Kashin, Alexander N., Karlstedt, Natalia B., Mitin, Anton V., Cheprakov, Andrei V., Kazankov, Grigoriy M.

“…Eight cyclopalladated complexes of the formula [Pd 2(μ-L) 2(NC) 2] (L=OAc, Cl; NC=cyclometalled N donor: o-(2-pyridyl)phenyl, o-(2-pyridyloxy)phenyl,…”
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Synthesis and Luminescence of Soluble m eso-Unsubstituted Tetrabenzo- and Tetranaphtho[2,3]porphyrins by Finikova, Olga S, Cheprakov, Andrei V, Vinogradov, Sergei A

“…Syntheses of soluble tetrabenzoporphyrins (TBP) and tetranaphtho[2,3]porphyrins (TNP), with multiple substituents in the conjugated aromatic rings but bearing…”
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