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1983[X]
1Author    Macki Kaloga, Ilona ChristiansenRequires cookie*
 Title    Photodimerisation of 6 -1 rans-Styry 1 -4 -methoxy-2 -pyr one (= 5,6-Dehydrokawain) and cis-Isomerisation of (±)-Kawain  
 Abstract    The photochemical transformation of 5,6-Dehydrokawain (1) to rel-(lR,6S,7S,8S)-5-methoxy-7-phenyl-8-[6-(4-methoxy-2-pyronyl)]-l-(E)-styryl-2-oxabicyclo[4,2,0]octa-4-en-3-one (2) by irradiation with a light bulb [1] is con-firmed. Kawain (3) turns out to be resistent to photochemical reaction in several tests. During irradiation by a Hg-lamp a transformation to cis-Kawain (4) takes place, however. 
  Reference    Z. Naturforsch. 38b, 658—659 (1983); eingegangen am 13. November 1982 und 31. Januar 1983 
  Published    1983 
  Keywords    Aniba-Dimer-A, 5, 6-Dehydrokawain, cis-Kawain, Photodimerisation, Photoisomerisation 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0658_n.pdf 
 Identifier    ZNB-1983-38b-0658_n 
 Volume    38 
2Author    Detlef GeffRequires cookie*
 Title    Imidazole Catalyzed Transformation of 2-Arylmethylperhydro-l,5,2-dioxazine- 3,6-diones into 4-Oxazolidinones  
  Reference    Z. Naturforsch. 38b, 531—534 (1983); eingegangen am 23. November 1982 
  Published    1983 
  Keywords    2 -Ary lmethy lperhydro -1, 5, 2 -dioxazine -3, 6-diones, Imidazole, Thermolysis, 4-Oxazolidinones, Glyoxylamides 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0531_n.pdf 
 Identifier    ZNB-1983-38b-0531_n 
 Volume    38 
3Author    Detlef GeffkenRequires cookie*
 Title    3-Hydroxy-, 3-Alkoxy-und 3-Amino-2-thioxooxazolidin-4-one aus 6 -Thioxoperhydro -1.5.2-dioxazin -3 -onen 3-Hydroxy-, 3-Alkoxy-and 3-Amino-2-thioxooxazolidine-4-ones from 6-Thioxoperhydro-1,5,2-dioxazine-3-ones  
  Reference    Z. Naturforsch. 38b, 1008—1014 (1983); eingegangen am 5. Mai 1983 
  Published    1983 
  Keywords    Glycolohydroxamic Acids, l, l'-Thiocarbonyldiimidazole, 6-Thioxoperhydro-1, 5, 2-dioxazine-3-ones, Ring Transformation 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-1008.pdf 
 Identifier    ZNB-1983-38b-1008 
 Volume    38