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'Isomerization' in keywords Facet   section ZfN Section B  [X]
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1990 (1)
1982 (1)
1975 (1)
1Author    H. Parlar, R. Baumann, M. BahadirRequires cookie*
 Title    Triplett-sensibilisierte Isomerisierung des Insektizids Thiodan Triplet Sensibilized Isomers of the Insecticide Thiodane  
 Abstract    The photoisomerization reactions of cyclodiene insecticide Thiodane were investigated in dif-ferent solvent systems, with wavelengths above 290 nm. The results show that /S-isomere (2) can be converted in the presence of acetone into the a-isomere (1). Photokinetic experiments give sufficient information on the character of the excited state of these compounds. 
  Reference    Z. Naturforsch. 37b, 260—263 (1982); eingegangen am 26. Oktober 1981 
  Published    1982 
  Keywords    Thiodane, Photochemical Reactions, Isomerization 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0260_n.pdf 
 Identifier    ZNB-1982-37b-0260_n 
 Volume    37 
2Author    J. R., D. B., F. K.Requires cookie*
 Title    High Pressure Reactions, IX 1 Isomerizations at High Pressures  
 Abstract    Cyclooctatetraene dimerises at high pres­ sure (12 Kbar, 20 °C) to the isomers 2 and 3. At 120 °C compound 2 isomerises quanti­ tatively to compound 3. The conversion rate of Hexamethyldewarbenzene to Hexamethyl-benzene at high pressures depends on kind of solvent, whereas the influence of tempera­ ture is small in the range between 2 0 ° and ' 80 °C. 
  Reference    (Z. Naturforsch. 30b, 290 [1975]; eingegangen am 17. Oktober 1974) 
  Published    1975 
  Keywords    High Pressure, Cyclooctatetraene, Dimerisation, Hexamethyldewarbenzene, Isomerization 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0290_n.pdf 
 Identifier    ZNB-1975-30b-0290_n 
 Volume    30 
3Author    Kerstin Dippel, Uwe KlingebielRequires cookie*
 Title    Kontraktionsreaktionen lithiierter Cyclotetrasilazane zu Cyclotri-und Cyclodisilazanen C ontraction Reactions of Lithiated Cyclotetrasilazanes Yielding Cyclotri-and Cyclodisilazanes  
 Abstract    The lithium derivate o f the octamethylcyclotetrasilazane 1 reacts with fluorosilanes with substitution (2) or substitution and contraction to give cyclotrisilazanes (3 —6). Lithiated 6 again reacts with substitution (7, 11, 12) or substitution and isomerization to give l,3 -(S i-N -S i) substituted cyclodisilazanes (8 , 13). Starting with the dilithiated eight mem-bered ring (14) the reactions with fluorosilanes lead to the formation o f the unsymmetrically l-(S i)-3 -(S i-N -S i-N -S i)-s u b s titu te d four mem bered rings (9, 10). The isomerization o f the lithium salts depends on thermal, thermodynamic and kinetic effects. 
  Reference    Z. Naturforsch. 45b, 1147—1154 (1990); eingegangen am 26. Januar 1990 
  Published    1990 
  Keywords    Cyclotetrasilazane, Lithium Salts, Isomerization, Cyclodisilazanes, Cyclotrisilazanes 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1147.pdf 
 Identifier    ZNB-1990-45b-1147 
 Volume    45