Victor B. Rybakov

We don’t have enough information about this author to calculate their statistics. If you think this is an error let us know.
Learn More
In the cation of the title compound, C(7)H(8)N(5) (+)·Cl(-)·H(2)O, the mean planes of the pyridine and 1,2,4-triazole rings form a dihedral angle of 2.3 (1)°. The N atom of the amino group adopts a trigonal-pyramidal configuration. The N atom of the pyridine ring is protonated, forming a chloride salt. In the crystal, inter-molecular N-H⋯O, N-H⋯N, N-H⋯Cl(More)
In the title mol-ecule, C(14)H(15)NO(3), the six-membered heterocyclic ring exhibits an envelope conformation. In the crystal, C-H⋯π inter-actions link the mol-ecules into centrosymmetric dimers, and weak inter-molecular C-H⋯O hydrogen bonds link these dimers into columns propagated along [100].
Quo vadis? The Lewis acid catalyzed reaction of (hetero)aryl-derived donor-acceptor cyclopropanes with alkenes can be selectively directed along a [3+2] annulation pathway (see scheme). This new process provides convenient and efficient access to indanes and other cyclopentannulated (hetero)arenes, among which polyoxygenated 1-arylindanes exhibit(More)
In the title complex, [Cu(H(2)NCH(2)CH(2)NH(2))(3)](CF(3)COO)(2), the environment of the Cu atom is distorted octa-hedral, formed by six N atoms from three chelating ethane-1,2-diamine ligands. The Cu-N distances range from 2.050 (2) to 2.300 (2) Å. This complex cation and the two trifluoro-acetate anions are connected by weak N-H⋯O and N-H⋯F hydrogen(More)
Abstract: Indolizyl-5-lithium anions react with succinic and phtalic anhidrides giving 1,4-keto acids, with oxallyl chloride giving 1,2-diketone, and with ethyl pyruvate giving 1,2-hydroxyacid. However, with α-halocarbonyl compounds, they react in different ways, forming the products of selective bromination at C-5 (with α-bromo ketones and esters of(More)
In the title salt, C15H16NO4(+.)Br3(-), classical intra-molecular O-H⋯O hydrogen bonds are found, which results in the co-planarity of the ester substituents with the quinolinium residue [C-C-C-O torsion angle = 1.0 (10)°]. The bromine anions are placed on both sides of heterocyclic cation and form Br⋯N contacts of 3.674 (9) and 3.860 (9) Å, which confirms(More)
A series of half-sandwich and sandwich-type lanthanide(III) complexes have been prepared using tetrabenzotriazaporphyrin ligands. Reaction of 27-phenyl-29H,31H-tetrabenzo[b,g,l,q][5,10,15]-triazaporphyrin (PhTBTAPH2, 1) with salts [LnX3]·nH2O (Ln = Eu (a), Lu (b); X = OAc, acac) afforded the single- and homoleptic double-deckers (PhTBTAP)LnOAc (2) and(More)
meso-Diaryltetrabenzo(opp)diazaporphyrins are made readily available via Curtius rearrangement of azidocarbonyl derivatives of meso-aryldibenzodipyrromethenes, readily generated with or without isolation from tert-butoxycarbonyl derivatives of the same system. The new tetrapyrrolic dyes are isostructural with 5,15-diaryltetrabenzoporphyrins and resemble(More)
The acid-catalyzed condensation between 2-aminosubstituted [1,2,4]triazolo[1,5-a]pyrimidines and their analogues with various saturation of the pyrimidine ring and 1,3-diketones or 1,1,3,3-tetramethoxypropane was evaluated as a new approach for the synthesis of diversely substituted polycyclic derivatives of triazolopyrimidine. The reaction of(More)
Individual compounds and solid solutions are obtained under hydrothermal conditions in the Bi(2)O(3)-SiO(2)-MnO(2) system in the form of faceted crystals and epitaxial films on the Bi(24)Si(2)O(40) substrate. The crystals have the shape of a cube (for the molar ratio of the starting components Na(2)SiO(3)·9H(2)O:Mn(NO(3))(2)·6H(2)O > 1), a tetrahedron (for(More)