Heteroligand Lanthanide Dialkyldithiocarbamate Complexes with 1,10-Phenanthroline: A New Approach to Synthesis and Application for the Preparation of Sulfides

A new simple method of synthesis of heteroligand complexes [Ln(Dalkdtc)₃Phen] (Ln = Eu or Er; Dalkdtc is the dialkyldithiocarbamate ion, Phen is o-phenanthroline) in an aqueous solution is described; the possibility of using the complexes as initial reagents for the synthesis of rare-earth sulfides is shown.     

Transformations of Cyclohexane under the Action of in situ Generated Aluminum Halides

Transformations of inert cyclohexane into dimethyldecalins under mild conditions in the presence of a simple catalytic system consisting of aluminum metal and halomethanes were studied.     

Synthesis of H (type 4) trisaccharide,key structural fragment of globo-H and fucosyl-GM1 cancer-associated antigens

A convenient synthesis of Fucα1-2Galβ1-3GalNAcβ-OCH₂CH₂CH₂NH₂ (trisaccharide H type 4) is described. This glycan is the terminal part of glycosphingolipids globo-H and fucosyl-GM1 known as cancer-associated carbohydrate antigens.     

Antiviral drug Triazavirin,selectively labeled with 2H, 13C,and 15N stable isotopes. Synthesis and properties

Chemistry of Heterocyclic Compounds - Isotope-labeled antiviral drug Triazavirin containing 2H, 13C, and 15N atoms in its structure has been synthesized. 13C2H3I and KS13CN served as donors of 13C...     

Identification and biological activity of the volatile organic substances emitted by plants and insects II. Sesquiterpene composition of the native scent of leaves of the potatoSolanum tuberosum

By dynamic gas extraction of the volatile components of the native scent of the leaves of the potatoSolanum tuberosum L. growing under natural conditions, followed by the gas-chromatographic separation and massspectrometric analysis of the substances obtained, the following sesquiterpene compounds have been identified:trans-andcis-caryophyllenes, -ylangene, -copaene, -bourbonene, -elemene, Z--farnesene, aromadendrene, -humulene, -elemene, -bisabolene, -cadinene, and -cadinene.Institute of Petrochemistry and Catalysis, Academy of Sciences of the Republic of Bashkortostan, and Ufa Scientific Center, Russian Academy of Sciences. Ufa-450075, Prospekt Oktyabrya, 141, tel./fax 7+(3472) 312750; ink@anrb.ru. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 472–477, July–August, 1999.     

Laser-diode-pumped phosphosilicate-fiber Raman laser with an output power of 1 W at 1.48 mum

An all-fiber 1.48-mum generator based on a laser-diode-pumped Yb-doped double-clad laser and a cascaded Raman wavelength converter has been developed. Second-order Raman Stokes radiation was generated in a phosphosilicate-fiber resonator formed by two pairs of Bragg gratings. A slope efficiency of the Raman converter of 48% with respect to the power emitted by the double-clad Yb laser has been achieved. We obtained an output power of 1 W at a slope efficiency of 34% with respect to the laser-diode array power, with a total optical-to-optical efficiency of 23%.     

A polarographic study of aliphatic nitro compounds

Conclusions Study of the electrochemical reduction of tert-nitrobutane and 2,2-dinitropropane has shown that passage from the mononitroalkanes to the gem-dinitroalkanes involves an alteration in the reduction mechanism.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1719–1724, August, 1976.