| | 1 | Author
| Alfred Schm, Stefan Planka, Kurt Polbornb | Requires 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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| default:Reihe_B/50/ZNB-1995-50b-1543.pdf | | | | Identifier
| ZNB-1995-50b-1543 | | | | Volume
| 50 | |
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