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'Phosphino Ylides' in keywords Facet   Publication Year 1995  [X]
Facet   section ZfN Section B  [X]
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1Author    Alfred Schm, Stefan Planka, Kurt PolbornbRequires cookie*
 Title    2-YIidvl-l,3,2-oxathiaphosphole und -oxaselenaphosphole 2-Ylidyl-l,3,2-oxathiaphospholes and -oxaselenaphospholes  
 Abstract    Ylidyl thioxophosphines or selenoxophosphines and phenacyl halides undergo addition in a 1:1 ratio and yield in the presence of triethylamine the title compounds. The molecular structure of an ylidyl oxathiaphosphole demonstrates a strong interaction between the ylid substituent and the heterocycle, making the exocyclic PC-bond unusually short and the end-ocyclic PO-and PS-bonds considerably longer than normal for a pyramidal phosphorus atom. The ylidyl chalcogenoxophosphines are oxidized by sulfur or selenium at the phosphorus atom and protonated at the ylidic carbon atom. N o Wittig-type reaction is observed. Ein Ylidyl-thioxo-und -selenoxophosphan (Thioxo-und Selenoxophosphanyl-ylid) 1,2 [1,2] 
  Reference    Z. Naturforsch. 50b, 1543—1549 (1995); eingegangen am 10. Mai 1995 
  Published    1995 
  Keywords    Phosphino-Ylides, Thioxo-and Selenoxophosphanes, Cyclocondensation, Phosphorus Heterocycles, N egative Hyperconjugation 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1543.pdf 
 Identifier    ZNB-1995-50b-1543 
 Volume    50