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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