L. Yu. Ukhin

Cationic dithiolene metal complexes with 5,6-dihydro-1,4-dithiin-2,3-dithiol: Highly conducting metal complex analogues of BEDT-TTF salts

Abstract A new class of highly conducting compounds (cationic dithiolene metal complexes of Ni and Au with 5,6-dihydro-1,4-dithiin-2,3-dithiol (DDDT), which are metal complex analogues of BEDT-TTF salts) has been obtained. The crystal structure of one of the representatives of this class, [Ni(DDDT) 2 ] 3 (BF 4 ) 2 , has been determined. The crystal contains stacks of [Ni(DDDT) 2 ] cations with shortened intra- and interstack S·S contacts. The conductivity of these complexes at room temperature is 1 – 50 ohm −1 cm −1 .

Formation of trinuclear complexes with bisacyl-π-allyl ligands from palladium acetate and pyrylium salts

Abstract Trimeric palladium acetate reacts with 2,6-disubstituted pyrylium salts to give trinuclear bis-acyl-allylpalladium acetates. The structure of bis(1,3-dipyvaloyl-π-allyl)trispalladium(II) μ-tetraacetate is determined by an X-ray study.

Unusual infinite-chain anion [Cu2I−3-]∞ in the structure of its thiopyrilium salt

Abstract The crystal structure of [C23H17S]+[Cu2I3]− (C23H17S = 2,4,6-triphenylthiopyrilium) has been determined at -120 °C and refined by least-squares to R = 0.033 using 2861 intensities collected by the counter method. Black crystals obtained are hexagonal, a = 13.856(5), c = 20.778(4) A, space group P61, Z = 6. The structure contains infinite anions [Cu2I−3]∞, the chains of I4 tetrahedra being centered by Cu atoms and joined via their faces and edges. The shortest Cu⋯Cu distances where 2.479 and 2.634 A. The discrete [C23H17S]+ cations are disordered. Similar complexes with other heterocyclic cations have been prepared.

Formation of π-allyl ligand from pyrylium salts, synthesis and structure of novel π-allyl complexes of palladium(II)

Abstract 2.6-Disubstituted pyrylium salts are found to react with PdCl 2 in an unexpected manner with the ring opening and the formation of novel complexes of the π-allyl type. The structure of the complex with t-butyl substituents is elucidated by X-ray analysis. Crystals are monoclinic, a = 12.310, b = 10.932, c = 12.357 A, α = 112.71°, Z = 4, space group P 2 1 / b . The structure is refined with 2595 reflections to R = 0.034

Alkynylation of Cotarnine Hydrochloride by Ag(I) Acetylenides

Abstract1-Organoacetylene derivatives were prepared by reaction of cotarnine hydrochloride with silver organoacetylenides with brief heating in acetonitrile. The structure of one of these, 1-(3′-hydroxypropyn-1-yl)-2-methyl-6,7-methylenedioxy-8-methoxy-1,2,3,4-tetrahydroisoquinoline, wasproved by an X-ray structure analysis.

Alkynation of Chlorinated Cotarnine by Silver Propargylamines

Chlorinated cotarnine was alkynated in the 1-position upon brief heating in acetonitrile with silver acetylenides of propargylamines to form the corresponding propargylamine derivatives.

Synthesis of novel dibenzo-2,6,9-triazabicyclo[3.3.1]nonanes from o-tosylamino- and o-mesylaminobenzaldehydes

Condensation of o-tosylaminobenzaldehyde with γ-aminobutyric, 4-aminophenylthioacetic, and p-aminobenzoic acids and β-alanine gave 6,12-epimino-5,11-ditosyl-5,6,11,12-tetrahydrodibenzo[b, f]-1,5-diazocines with carboxyl-containing substituents at the bridging N atoms. The structures of three products were examined by X-ray diffraction analysis. Condensation of o-mesylaminobenzaldehyde (prepared by the McFadyen-Stevens reaction) with NH4OAc and primary amines afforded 6,12-epimino-5,11-dimesyl-5,6,11,12-tetrahydrodibenzo[b, f]-1,5-diazocine derivatives.

Dehydration Rearrangements of Derivatives of Methylenedihydrobenzofuran - a New Path to Substituted Benzofurans

When heated with acidic agents derivatives of 3-amino-2-(hydroxydialkylmethyl)methylene-2,3-dihydrobenzofuran undergo rapid dehydration and rearrangement to substituted 2-alkenyl-3-aminobenzofurans.

Synthesis of new 3,4-di-and 1,2,3,4-tetrahydroquinazolin-4-one derivatives and X-ray diffraction study of crystal solvates of 3-methylsulfonylamino-2-(2-methylsulfonylaminophenyl)-1,2,3,4-tetrahydroquinazolin-4-one

The reactions of hydrazide, mesyl hydrazide, succinyl hydrazide, and maleyl hydrazide of anthranilic acid with carbonyl compounds were studied, and new di-and tetrahydroquinazolin-4-one derivatives were prepared. The structure of one reaction product, viz., 3-methylsulfonylamino-2-(2-methylsulfonylaminophenyl)-1,2,3,4-tetrahydroquinazolin-4-one, was established by X-ray diffraction study of two crystal solvates of this compound. The characteristic features of the crystal packings of these solvates are discussed.

Reactions ofo-tosylaminobenzaldehyde withp-aminobenzenesulfonamides. Synthesis and structures of 13-(4-aminosulfonylphenyl)-6,12-epimino-5,11-ditosyl-5,6,11,12-tetrahydrodibenzo[b,f]-1,5-diazocine and itsN-substituted derivatives

The reactions ofo-tosylaminobenzaldehyde (1) withp-aminobenzenesulfonamides (2a-c) yielded 13-(p-RNHSO2C6H4)-6,12-epimino-5,11-ditosyl-5,6,11,12-tetrahydrodibenzo[b f]-1,5-diazocines (3a-c) (R=H (a); 2-thiazolyl (b); or 2,6-dimethoxy-4-pyrimidinyl 2,6-dimethoxy-4-pyrimidinyl (c). The structure of compound3c was confirmed by X-ray diffurction study.