Vasiliy Bakulev

article

High Conductivity in Molecularly p‐Doped Diketopyrrolopyrrole‐Based Polymer: The Impact of a High Dopant Strength and Good Structural Order

Yevhen Karpov, Tim Erdmann, Ivan Raguzin, Mahmoud Al‐Hussein, more

Advanced Materials > 28 > 28 > 6003 - 6010

[3]‐Radialene‐based dopant CN6‐CP studied herein, with its reduction potential of +0.8 versus Fc/Fc+ and the lowest unoccupied molecular orbital level of −5.87 eV, is the strongest molecular p‐dopant reported in the open literature, so far. The efficient p‐doping of the donor–acceptor dithienyl‐diketopyrrolopyrrole‐based copolymer having the highest unoccupied molecular orbital level of −5.49 eV is...

article

A catalyst and additive-free three-component reaction of highly electrophilic azides with cyclic ketones and cycloaliphatic amines. Synthesis of novel N-heteroaryl amidines

Ilya Efimov, Nikolai Beliaev, Tetyana Beryozkina, Pavel Slepukhin, more

Tetrahedron Letters > 2016 > 57 > 18 > 1949-1952

Highly electrophilic 5-azido-1-methyl-4-nitro-1H-imidazole and sulfonyl azides were demonstrated to react with alicyclic amines and cyclic ketones in the absence of any catalyst or additive to afford novel N-(4-nitroimidazol-5-yl)- or N-sulfonylamidines respectively. Based on single crystal X-ray analysis, a revision of the previously reported data of Gao and co-workers on the direction of the reaction...

article

A heterocyclic compound CE-103 inhibits dopamine reuptake and modulates dopamine transporter and dopamine D1-D3 containing receptor complexes

Ajinkya Sase, Yogesh D. Aher, Sivaprakasam R. Saroja, Minu Karthika Ganesan, more

Neuropharmacology > 2016 > 102 > C > 186-196

A series of compounds have been reported to enhance memory via the DA system and herein a heterocyclic compound was tested for working memory (WM) enhancement. 2-((benzhydrylsulfinyl)methyl)thiazole (CE-103) was synthesized in a six-step synthesis. Binding of CE-103 to the dopamine (DAT), serotonin (SERT) and norepinephrine (NET) transporters and dopamine reuptake inhibition was tested as well as...

chapter

Multi-Component Reactions in Supramolecular Chemistry and Material Science

Ludger A. Wessjohann, Stanisław Ostrowski, Vasiliy Bakulev, Vera Berseneva, more

Advances in Experimental Medicine and Biology > MCR 2009 > 173-201

Multi-component reactions of building blocks with more than one MCR-reactive group will give rise to oligomeric MCR products. The proper choice of at least two bifunctional building blocks will give either a polymeric or a cyclic product. Apart from polymerization, repetitive or consecutive Ugi reactions have been used to produce linear MCR-heterooligomers with such building blocks.

article

Reactions of Thioacetamide Derivatives with Sulfonyl Azides: An Approach to Active‐Methylene N‐Sulfonylacetamidines

Lidia Dianova, Vera Berseneva, Tetyana Beryozkina, Ilya Efimov, more

European Journal of Organic Chemistry > 2015 > 31 > 6917 - 6923

Reactions of functionalized [CN, CO₂Et, C(O)NHR, C(S)NR¹R²] derivatives of thiomalonic acid and 2‐arylthioacetamides with sulfonyl azides were shown to give active‐methylene N‐sulfonylamidines in 62–98 % yields. Various procedures for the reactions, including the use of pyridine, boiling ethanol, and water, or running the reactions in the absence of a base and solvent at 80 °C, were carried out and...

article

Effects of altered expression and activity levels of CK1δ and ɛ on tumor growth and survival of colorectal cancer patients

Julia Richter, Kalim Ullah, Pengfei Xu, Vanessa Alscher, more

International Journal of Cancer > 136 > 12 > 2799 - 2810

Colorectal cancer (CRC) is the fourth leading cause of cancer related death worldwide due to high apoptotic resistance and metastatic potential. Because mutations as well as deregulation of CK1 isoforms contribute to tumor development and tumor progression, CK1 has become an interesting drug target. In this study we show that CK1 isoforms are differently expressed in colon tumor cell lines and that...

article

A novel transformation of β-1,2,3-thiadiazol-5-yl enamines into thieno[2,3-d]pyridazines

Yuri Rozin, Sergey Zhidovinov, Tetyana Beryozkina, Yuri Shafran, more

Tetrahedron Letters > 2015 > 56 > 12 > 1545-1547

Reactions of β-1,2,3-thiadiazol-5-yl enamines with acetyl chloride in 1,4-dioxane lead to the formation of either dienamines or novel thieno[2,3-d]pyridazines depending on the time and reaction temperature. Conditions were found for the selective synthesis of thieno[2,3-d]pyridazines. A plausible mechanism involves formation of C–S and C–C bonds and a novel ring rearrangement of 5-vinyl-1,2,3-thiadiazoles...

article

Reactions of β‐Azolylenamines with Sulfonyl Azides as an Approach to N‐Unsubstituted 1,2,3‐Triazoles and Ethene‐1,2‐diamines

Ilya Efimov, Vasiliy Bakulev, Nikolai Beliaev, Tetyana Beryozkina, more

European Journal of Organic Chemistry > 2014 > 17 > 3684 - 3689

The reactions of β‐azolylenamines 1 with sulfonyl azides 2 in acetonitrile furnished 1H‐4‐(azol‐5‐yl)‐1,2,3‐triazoles 3 in yields of 52–93 %. β‐Benzoylenaminones and β‐nitroenamine of type 1 also reacted with tosyl azide to form the same type of products 3, proving the generality and efficiency of the method for the synthesis of N‐unsubstituted 1,2,3‐triazoles. On the other hand, the reactions of...

article

Palladium‐Catalyzed Chain‐Growth Polycondensation of AB‐type Monomers: High Catalyst Turnover and Polymerization Rates

Roman Tkachov, Volodymyr Senkovskyy, Tetyana Beryozkina, Kseniya Boyko, more

Angewandte Chemie > 126 > 9 > 2434 - 2439

Chain‐growth catalyst‐transfer polycondensations of AB‐type monomers is a new and rapidly developing tool for the preparation of well‐defined π‐conjugated (semiconducting) polymers for various optoelectronic applications. Herein, we report the Pd/PtBu₃‐catalyzed Negishi chain‐growth polycondensation of AB‐type monomers, which proceeds with unprecedented TONs of above 100 000 and TOFs of up to 280...

article

Palladium‐Catalyzed Chain‐Growth Polycondensation of AB‐type Monomers: High Catalyst Turnover and Polymerization Rates

Roman Tkachov, Volodymyr Senkovskyy, Tetyana Beryozkina, Kseniya Boyko, more

Angewandte Chemie International Edition > 53 > 9 > 2402 - 2407

Chain‐growth catalyst‐transfer polycondensations of AB‐type monomers is a new and rapidly developing tool for the preparation of well‐defined π‐conjugated (semiconducting) polymers for various optoelectronic applications. Herein, we report the Pd/PtBu₃‐catalyzed Negishi chain‐growth polycondensation of AB‐type monomers, which proceeds with unprecedented TONs of above 100 000 and TOFs of up to 280...

article

N,N′-Bis(1,2,3-thiadiazol-5-yl)benzene-1,2-diamine Targets the HIV-1 Retroviral Nucleocapsid Zinc Fingers

Christophe Pannecouque, Beata Szafarowicz, Natalia Volkova, Vasiliy Bakulev, more

Antiviral Research > 2010 > 86 > 1 > A41

INFONA - science communication portal

Search results for: Vasiliy Bakulev

High Conductivity in Molecularly p‐Doped Diketopyrrolopyrrole‐Based Polymer: The Impact of a High Dopant Strength and Good Structural Order

A catalyst and additive-free three-component reaction of highly electrophilic azides with cyclic ketones and cycloaliphatic amines. Synthesis of novel N-heteroaryl amidines

A heterocyclic compound CE-103 inhibits dopamine reuptake and modulates dopamine transporter and dopamine D1-D3 containing receptor complexes

Multi-Component Reactions in Supramolecular Chemistry and Material Science

Reactions of Thioacetamide Derivatives with Sulfonyl Azides: An Approach to Active‐Methylene N‐Sulfonylacetamidines

Effects of altered expression and activity levels of CK1δ and ɛ on tumor growth and survival of colorectal cancer patients

A novel transformation of β-1,2,3-thiadiazol-5-yl enamines into thieno[2,3-d]pyridazines

Reactions of β‐Azolylenamines with Sulfonyl Azides as an Approach to N‐Unsubstituted 1,2,3‐Triazoles and Ethene‐1,2‐diamines

Palladium‐Catalyzed Chain‐Growth Polycondensation of AB‐type Monomers: High Catalyst Turnover and Polymerization Rates

Palladium‐Catalyzed Chain‐Growth Polycondensation of AB‐type Monomers: High Catalyst Turnover and Polymerization Rates

N,N′-Bis(1,2,3-thiadiazol-5-yl)benzene-1,2-diamine Targets the HIV-1 Retroviral Nucleocapsid Zinc Fingers

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