Catalytic Activity of Polyfunctional Ionic Liquids in Oxidation of Model Sulfur Organic Compounds

Russian Journal of Applied Chemistry - Ionic liquids based on 1-methylimidazole were synthesized. The liquids contain Bronsted acid centers in the cation and a transition metal atom in the anion....     

Synthesis of 2,6-Diisopropyltetrahydro-2H-4-pyranone and Some Its Substituted Amino Derivatives

Russian Journal of General Chemistry - Cyclization of 2,8-dimethylnona-3,6-diene-5-one furnished 2,6-diisopropyltetrahydro-2H-4-pyranone. The condensation of the latter with alkylaryl and aliphatic...     

Photoinduced Effects in the ZnO Luminescence Spectra

The effect of intense UV irradiation on the photoluminescence (PL) spectra of ZnO powders and nanocrystalline films obtained by atomic layer deposition (ALD) was investigated. At room temperature, the behavior of the spectra under continuous UV irradiation in multiple vacuum-atmosphere cycles was studied. The changes in the intensities of exciton radiation and radiation in the “green” band region, associated with the phenomena of oxygen photodesorption and photoadsorption, are discussed. In the temperature range of 5–300 K, the effect of strong UV irradiation on the near-edge luminescence spectrum of ZnO films was studied. The nature of a new line arising in the photoluminescence spectra of an irradiated film in the region of emission of bound excitons is discussed.

     

Synthesis of 18,19-bisnor-δ1,3,5(10),13(17)-pregnapentaen-3-ol-20-one methyl ethek

Conclusions A method was developed for the synthesis of S-methoxy-^{1,3,5(10),13(17)}-D-homoestrapentaen-Ha-one, from which it was possible to obtain 3-methoxy-18,19-bisnor-_{1,3,5(10),13(17)}-pregnapentaen-20-one, a key compound in the total synthesis of 18-cyanosteroids.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1844–1848, August, 1973.     

Condensation of ethanolamine with chloro-sym-triazines

2,2-Aminoethoxy-sym-triazines have been synthesized by reduction of cyanomethoxy-sym-triazines or by the reaction of sodium 2-aminoethoxide with quaternary ammonium salts of sym-triazines. Their structures have been established by PMR and mass spectral examination.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 657–659, May, 1989.     

Resonance radiation in electromagnetic wave scattering by a fast electron in the external magnetic field

The resonance radiation in Compton scattering of an electromagnetic wave by a fast relativistic electron moving in a given magnetic field is investigated with allowance for deceleration by the radiation. A general expression for the electric field of an arbitrarily polarized scattered wave is derived within the framework of small-perturbation theory. It is shown that the resonance peak in the scattering cross-section is caused by the small radiation friction. The dependence of the resonance line width on the characteristic parameters of the problem is examined. The scattering of a given polarized wave is considered, and the degree of linear polarization of the radiated wave under resonance is determined.Institute of Radiophysics and Electronics, Armenian Academy of Sciences, Erevan. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 38, No. 10, pp. 1001–1011, October, 1995.