| | 1 | Author
| G. Jochem, A. Schmidpeter, H. Nöth | Requires cookie* | | | Title
| Bis(triphenylphosphoniumyIidyl)phosphane Bis(triphenylphosphoniumylidyl)phosphanes  | | | | Abstract
| Bis(ylidyl)phosphanes can be prepared from ylides and dichlorophosphanes or from bis-(ylidyl)phosphenium chlorides and organolithium compounds. By substituting in bis(ylidyl)-phosphenium chlorides the chloride ion for more basic anions, a large variety o f bis(ylidyl)-phosphanes is accessible. They can be protonated at the ylidic carbon atoms, but alkylated and oxidized at the central phosphorus atom. A s shown by 3IP NM R in solution and by X-ray investigation of the crystal, the lone pair at the tervalent phosphorus is generally oriented synperiplanar to both phosphonio groups. | | | |
Reference
| Z. Naturforsch. 51b, 267—2 (1996); eingegangen am 10. Juli 1995 | | | |
Published
| 1996 | | | |
Keywords
| Ylides, Transylidation, Phosphenium Ions, M ichaelis Arbusov Rearrangement, Diphosphanes | | | |
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| default:Reihe_B/51/ZNB-1996-51b-0267.pdf | | | | Identifier
| ZNB-1996-51b-0267 | | | | Volume
| 51 | |
| 2 | Author
| Florian Breitsameter, Peter Mayer, Alfred Schmidpeter | Requires cookie* | | | Title
| Die Kondensation von Ylidylchlorphosphanen mit Phosphanen und Bis(diphenylphosphanyl)methan und -amin The Condensation o f Ylidyl Chlorophosphines with Phosphines and Bis(diphenylphosphino)methane and -amine | | | | Abstract
| Ylidyl chlorophosphanes 1 and dichlorophosphanes 2 react with trimethylsilyl phosphanes to yield the ylidyl diphosphanes 3, 4,5, 7 and the 2-ylidyl triphosphanes 8. From the reaction of compounds 1 with lithium diphosphanyl amide and diphosphanyl methanide result the ylidyl diphosphonium ylides 11 and ylidyl diphosphinimines 13. The former rearrange to give the ylidyl triphosphanyl methanes 12. The chloromethyl diphosphinimine 13c enters a cyclization to give the 1,2,3,5-azatriphosphole derivative 14, the structure of which has been solved by X-ray analysis. From the reaction of ylidyl bis(chlorophosphanes) 17 and 20 with the same reagents the 1,2,4,5-tetraphosphinine derivative 18 and the 1,2,3,5,6-azatetraphosphinine derivatives 19 and 21 are obtained. | | | |
Reference
| Z. Naturforsch. 55b, 519—526 (2000); eingegangen am 21. Februar 2000 | | | |
Published
| 2000 | | | |
Keywords
| Phosphonium Ylides, Diphosphanes, 1, 2, 3, 5-Azatriphospholes | | | |
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| default:Reihe_B/55/ZNB-2000-55b-0519.pdf | | | | Identifier
| ZNB-2000-55b-0519 | | | | Volume
| 55 | |
| 3 | Author
| Marianne Baudler, Helmut Tschäbunin, H. Orst Suchomel, Jürgen Hasenbach | Requires cookie* | | | Title
| Beiträge zur Chemie des Phosphors, 228 [1] Funktionalisierte Diphosphane als Synthesebausteine: LiH(f-BuP)2, Li2(r-BuP)2, K2(i-PrP)2, (*-PrP)2Cl2 Contributions to the Chemistry of Phosphorus, 228 [1] Functionalized Diphosphanes as Synthetic Building Blocks: LiH(r-BuP)2, Li2(f-BuP)2, K2(/-PrP)2, (/-PrP)2Cl2 | | | |
Reference
| Z. Naturforsch. 49b, 773—7 (1994); eingegangen am 28. März 1994 | | | |
Published
| 1994 | | | |
Keywords
| Diphosphanes, 1 -Lithium-2-hydrogen-1, 2-di-rm-butyldiphosphide, 12-Dilithiurn-l, 2-di-rm-butyldiphosphide, l, 2-Dipotassium -l, 2-diisopropyldiphosphide, 12-Dichloro-l, 2-diisopropyldiphosphane | | | |
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| default:Reihe_B/49/ZNB-1994-49b-0773.pdf | | | | Identifier
| ZNB-1994-49b-0773 | | | | Volume
| 49 | |
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