Norbornene hydroarylation catalyzed by ferrocene palladacycle complexes

Two ferrocene derivatives containing palladacycles with bidentate (C,N) and tridentate (C,N,N) ligands were successfully used as catalysts for the hydroarylation of norbornene.     

Circular dichroism of optically active planar chiral cyclopalladium ferrocene derivatives. Investigation of the dimer-monomer equilibrium

The concentration dependence of the circular dichroism spectra of optically active dinuclear 2-dimethylaminomethylferrocenylpalladium chloride was studied in two solvents. The observed changes in the position and intensity of the Cotton effects were interpreted as a consequence of the dimer-monomer equilibrium. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1411–1413, July, 2007.     

Synthesis of ferrocenylarylethylenes and their cyclodextrin complexes,which are potential materials for nonlinear optics

Cis- andtrans-isomers of 1-ferrocenyl-2-(2-(4-)nitrophenyl)ethylenes and their complexes with -cyclodextrin have been synthesized with the aim of studying their nonlinear optical properties.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 2361–2363, September, 1996.     

Palladium complexes with 1-methyl-3-phenylindazole ligands

1-Methyl-3-phenylindazole reacts with lithium tetrachloropalladate and palladium acetate to give new coordination and (C,N)-cyclometallated dimeric and monomeric palladium complexes.     

Prototropic acetylene-allene isomerization in planarly chiral ferrocenes. Intramolecular acymmetric induction in the course of the formation of chiral axis

Racemic 2-trimethylsilyl- and 2-trimethylstannyl-1-(3-phenyl-2-propynyl)ferrocene (rac-1a,b) as well as the dextrorotatory specimen of the latter, (+)-1b, were synthesized in two steps from racemic 1-formyl-2-trimethylsilyl- and 1-formyl-2-trimethylstannylferrocenes (2a,b) or from the levorotatory specimen of the latter, (–)-2b, respectively. On the contact with strongly alkaline alumina compounds1a,b and (+)-1b undergo diastereoselective prototropic acetylene-allene rearrangement to give predominantly one of the two possible stereoisomers of 2-trimethylsilyl- or 2-trimethylstannyl-1-(3-phenyl-1,2-propadienyl)ferrocenes,rac-4a,b or (+)-4b, depending on the starting material (d. e. 30–40 %). The extent of intramolecular asymmetric induction in the formation of the axially chiral fragment during the transformation of (+)-1b to (+)-4b is estimated at 38 %.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1111– 1115, June, 1994.The work was carried out with financial support from the Russian Fundamental for Basic Research (Project No.93-03-5827).     

Por?se Struktur der Polyarylate

Ohne Zusammenfassung     

Mechanical properties of boron fibers

The distribution of the strength of boron fibers is examined on the basis of a large amount of experimental material. The typical defects are isolated and described. The dependence of the average strength on the length of the test fiber is investigated.State Scientific-Research Institute of Chemistry and Technology of Heteroorganic Compounds, Moscow. Translated from Mekhanika Polimerov, No. 4, pp. 641–647, July–August, 1973.     

Chiroptical properties and new derivatives of cyclopalladated 6-ferrocenyl-2,2′-bipyridine. Molecular structure of a tert-butyl isocyanide derivative

Optically active cyclopalladated 6-ferrocenyl-2,2′-bipyridine has been studied by circular dichroism and luminescent spectroscopy; a replacement of the chloride ion at palladium with the rhodanide ion and tert-butyl isocyanide molecule has been carried out; molecular structure of the product in the latter case has been determined by X-ray diffraction analysis.