Svetlana O. Baykova

Crystal Structure of 1,1-Dimethyl-3-(quinolin-2-yl)urea and 3-(Isoquinolin-1-yl)-1,1-dimethylurea

Svetlana O. Baykova, Sergey V. Baykov, Vadim P. Boyarskiy, Nadezhda A. Bokach

The crystal structures of two isomeric urea derivatives—1,1-dimethyl-3-(quinolin-2-yl)urea (1) and 3-(isoquinolin-1-yl)-1,1-dimethylurea (2)—have been investigated by single-crystal X-ray diffraction. These compounds differ in the relative position of the heterocyclic nitrogen atom and the urea substituent. A structural study revealed that the compounds exhibit …

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Columnar stacks versus metal-involved dimers: supramolecular behavior of square-planar Cu(II) complexes with deprotonated N-(Pyridin-2-yl)ureas

Sergey V. Baykov, Vladislava V. Matveevskaya, Alexander S. Novikov, Artem V. Semenov et autres

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Direct Mechanochemical Oxidation: Sustainable Access to Azine N ‐Oxides

Svetlana O. Baykova, Olga V. Solodyankina, Marina S. Vasileva, Sergey V. Baykov et autres

ABSTRACT A rapid, eco‐friendly mechanochemical protocol for direct oxidation of azines to N ‐oxides was developed. Using m CPBA—the common commercial oxidant—in a ball mill under solvent‐free conditions, the reaction completes in 1 h with yields up to 99%, much faster than …

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CCDC 2468209: Experimental Crystal Structure Determination

Sergey V. Baykov, Irina I. Fedorova, Daniil M. Ivanov, Artem V. Semenov et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 2468211: Experimental Crystal Structure Determination

Sergey V. Baykov, Irina I. Fedorova, Daniil M. Ivanov, Artem V. Semenov et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 2468210: Experimental Crystal Structure Determination

Sergey V. Baykov, Irina I. Fedorova, Daniil M. Ivanov, Artem V. Semenov et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

Dual σ- and π-Hole Chalcogen Bonding with Cooperative π-Stacking: Noncovalent Forces That Amplify Halogen Bond Donors

Sergey V. Baykov, Irina I. Fedorova, Daniil M. Ivanov, Artem V. Semenov et autres

This work presents a strategy for amplifying halogen bond donor capability through the cooperative interplay of dual σ- and π-hole chalcogen bonding and π···π stacking. Employing 4-nitro-5-chalcogenocyanatophthalonitriles as coformers for cocrystallization with haloarenes, we demonstrate an advanced approach that surpasses the previously …

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Mechanochemical Approach for Amidoxime Synthesis

Svetlana O. Baykova, Olga V. Solodyankina, Sergey V. Baykov, Aliona Cilcic et autres

ABSTRACT We have developed a convenient and modern method for obtaining amidoximes from aryl‐ or heteroaryl nitriles and hydroxylamine hydrochloride in the presence of a base using mechanochemical activation of the starting compounds. The method does not require the use of large …

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Different Stacking Types in a Single Hybrid Cocrystal System: π···π- and π–Hole-Based Organic–Inorganic Planar Assemblies

Sergey V. Baykov, Eugene A. Katlenok, Artem V. Semenov, Svetlana O. Baykova et autres

The planar bis-chelated complex [Pd(N ∩ O) 2 ] ( 1; N ∩ O = 4-MeC 5 H 3 NNC(O)NMe 2 ) exhibits two distinct stacking modes with electron-deficient aromatics: π···π stacking with hexafluorobenzene (C 6 F 6 ) versus charge-transfer π–hole …

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Copper-catalyzed N -arylation of 1,2,4-oxadiazin-5(6 H )-ones by diaryliodonium salts

Sofia I. Presnukhina, Svetlana O. Baykova, Elizaveta A. Chukanova, Nadezhda M Metalnikova et autres

Herein, we developed a new synthetic approach for the preparation of N -arylated 1,2,4-oxadiazin-5(6 H )-ones by direct arylation with diaryliodonium salts.

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Access to 4-(pyridin-2-yloxy)-1,2,4-thiadiazol-5(4 H )-ones via an amidoxime O-heteroarylation/cyclization reaction sequence

Olga V. Solodyankina, Svetlana O. Baykova, Sergey V. Baykov, Nurila A. Togyzbayeva et autres

)-ones functionalized at the N4 atom of the heterocycle by a pyridine moiety. Structural analysis of the products, combined with DFT theoretical calculations, allowed us to propose a reaction mechanism involving a key acylpyridinium intermediate.

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Palladium-Functionalized Polysiloxane Drop-Casted on Carbon Paper as a Heterogeneous Catalyst for the Suzuki–Miyaura Reaction

Ekaterina A. Golovenko, Anastasia N. Kocheva, Artem V. Semenov, Svetlana O. Baykova et autres

-cyclometalated complex was grafted to polysiloxanes via azide-alkyne cycloaddition. The obtained polymer-metal complex (Pd-PDMS) acts as a catalyst in the Suzuki-Miyaura reaction. Pd-PDMS was drop-casted onto a carbon fiber support, and the resulting membrane demonstrated catalytic activity in the cross-coupling reaction without …

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