Zobrazeno 1 - 10
of 132
pro vyhledávání: '"D. S. Yufit"'
Publikováno v:
Russian Chemical Bulletin. 46:759-763
The reaction of thiocarbonyl ylides with activated acetylene derivatives gives (E,E)-divinyl sulfides in good yields. The reaction mechanism is discussed and evidence in favor of the formation of a thiirane intermediate is presented.
Autor:
I. V. Chernoglazova, Yu. T. Struchkov, I. A. Garbuzova, Yu. G. Gololobov, D. S. Yufit, Boris V. Lokshin
Publikováno v:
Russian Chemical Bulletin. 45:1404-1409
Chelate complexes of antimony tetrachloride with dibenzoylmethane and (benzoylchloro-methyl)diphenylphosphine oxide were stndicd by X-ray diffraction, I R, and Raman spectroscopy. The antimony atom has a slightly distorted octahedral coordination in
Publikováno v:
Russian Chemical Bulletin. 44:2337-2345
Characteristic features of the molecular geometry and electron density distribution in the crystals of 3,6-dimethoxy-1,2,4,5-tetrazine and 3-phenyl-1,2,4,5-tetrazine have been studied by X-ray structural analysis and quantum-chemical (RHF and MP2) an
Autor:
J. W. Walton, R. Carr, N. H. Evans, A. M. Funk, A. M. Kenwright, D. S. Yufit, M. Botta, D. Parker, S. De Pinto, K-L. Wong
Publikováno v:
Inorganic Chemistry.
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:783-788
Treatment of 4-methyl-5 -phenyl-3H-1,2-dithiole-3-thione with dicarbomethoxyaceotene gave 2,3,4′,5′-tetra-carbomethoxy-5-methyl-6-phenylthiopyran-4-spiro-2′-(1,3-dithiole) whose structure was proved by x-ray investigation.
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:674-682
2,2,3,3-Tetracyano-7,8-dithiabicyclo[3.2.1]octanes were formed in the reaction of dithiocarboxyclic acid allyl and cinnamyl esters with tetracyanoethylene, and their structure was determined by a number of physico-chemical methods, including x-ray st
Autor:
N. A. Klyuev, S. N. Golosov, Yu. T. Struchkov, S. K. Gorozhankin, A. N. Kornilov, V. I. Sorokin, D. S. Yufit, V. N. Drozd
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:317-324
We have carried out synthetic and physicochemical investigations of N-(1-methyl-2-carbomethoxyindolyl-3-sulfonyl)-N′-hetarylureas which are a new generation of potential herbicides and plant growth regulators.
Publikováno v:
Russian Chemical Bulletin. 43:245-248
The crystal and molecular structures of the title compound have been established by the X-ray diffraction method. The molecule has a bent configuration with a dihedral angle between the double bond planes of 43.2°. The double bonds are localized and
Publikováno v:
Chemistry of Heterocyclic Compounds. 29:1441-1446
We synthesized and conducted an x-ray diffraction investigation of an effective plant growth regulator of the sulfonylurea class: N(o-chlorophenylsulfonyl)-N′-(4-dimethylamino-6-isopropylideneaminoxy-1,3,5-triazin-2-yl)urea. We discuss the hydrogen
Publikováno v:
Acta Crystallographica Section B Structural Science. 49:704-708
An X-ray structural study of two gem-dihalosubstituted triangulanes, possessing linear fragments of spiroannulated cyclopropanes, allowed us to work out an empirical calculation scheme describing the geometry of triangulanes. The crystal data for 1,1