Please use this identifier to cite or link to this item:
http://dx.doi.org/10.18419/opus-1278
Authors: | Fluck, Ekkehard Neumüller, Bernhard Heckmann, Gernot Braun, Roland Becker, Gerd Knebl, Robert Riffel, Heinz |
Title: | From 1,3-Diphosphacyclobutadiene to 1,3,5-triphosphabenzene |
Issue Date: | 1987 |
metadata.ubs.publikation.typ: | Zeitschriftenartikel |
metadata.ubs.publikation.source: | Phosphorus and sulfur and the related elements 30 (1987), S. 381-384. URL http://dx.doi.org./10.1080/03086648708080600 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-58072 http://elib.uni-stuttgart.de/handle/11682/1295 http://dx.doi.org/10.18419/opus-1278 |
Abstract: | Alkyl- and aryldiaminodifluorophosphoranes 1 can easily be obtained by fluorination of alkyl- and aryldiaminophosphanes with sulfur tetrafluoride, SF4 1. Peralkylated alkyldiaminodifluorophosphoranes react with one mole of n-butyllithium to form P-fluoro-ylides, a class of compounds which had not been described previously. Methylbis(dimethylamino)difluorophosphorane 2, e.g., reacts with butyllithium to give methylenebis(dimethylamino)fluorophosphorane 3, a colorless liquid, b.p. 42 °C (10 Torr)2: For P-chloro-ylides such as (t-C4H9)2PCI=CHSi(CH3)3, the chloro ligand is substituted by the alkyl group upon reaction with methyl-or n-butyllithium3,4; however, P-fluoro-ylides behave in a different way. If 2 is reacted with two moles of butyllithium, the main product is the crystalline, colorless 1,1,3,3-tetrakis(dimethylamino)-1δ 5, 3δ 5-diphosphete or 1,1,3,3-tetrakis(dimethylamino)-δ 5, 3δ 5-diphosphacyclobutadiene 4 (chemical shift σ(P) = 48.9 ppm)5. |
Appears in Collections: | 03 Fakultät Chemie |
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