103559-83-7Relevant articles and documents
Synthetic and NMR studies on hexaphenylcarbodiphosphorane (Ph3P[dbnd]C[dbnd]PPh3)
Gruber, Marco,Bauer, Walter,Maid, Harald,Sch?ll, Kilian,Tykwinski, Rik R.
, p. 152 - 158 (2017/09/30)
Bisylides of the type R3P[dbnd]C[dbnd]PR3, also known as carbodiphosphoranes, are very reactive compounds having numerous unusual and promising properties. The first representatives of this class of divalent carbon(0) compounds have already been synthesized over 50 years ago, but aspects of their chemistry and properties remain ambiguous. Herein, we report on specific characteristics of a simple carbodiphosphorane, hexaphenylcarbodiphosphorane Ph3P[dbnd]C[dbnd]PPh3, based on 1H, 13C, and 31P NMR studies. The chemical shift and 1JCP coupling characteristics of the central sp-hybridized carbon atom are compared to those of other sp-hybridized carbons. Our spectroscopic findings are supported by simulations, which are in very good agreement with the experimentally determined values.
Three and four coordinate Fe carbodiphosphorane complexes
Pranckevicius, Conor,Iovan, Diana A.,Stephan, Douglas W.
, p. 16820 - 16825 (2016/11/09)
Carbodiphosphoranes (CDPs) are a family of divalent carbon ligands that are known for their exceptional electron donor properties. Herein, the preparation and reactivity of a family of three and four co-ordinate Fe carbodiphosphorane complexes is describe
Evaluation of the electronic properties of a carbodiphosphorane through gold catalysis
El-Hellani, Ahmad,Bour, Christophe,Gandon, Vincent
, p. 1865 - 1870 (2011/10/13)
Carbodiphosphoranes [C(PR3)2] are divalent carbon(0) derivatives which can be used as ligands to form either M←C(PR 3)2 or (M)2← C(PR3)2 species. They were computationally predicted to be even stronger electron donors than N-heterocyclic carbenes. We have introduced hexaphenylcarbodiphosphorane [C(PPh3)2] for the first time in gold catalysis in order to validate this prediction by experimentation. Its mono- and digold complexes were compared to tris(2,4-di-tert-butylphenyl) phosphite, triphenylphosphine, and 1,3-bis(2,6-diisopropylphenyl)imidazol-2- ylidene in representative gold(I)-catalyzed transformations. The advantages and limitations of these ligands are discussed. Copyright
Cyanophosphorus Compounds, 8. The Unusual Anion P2C10N102-
Schmidpeter, Alfred,Zwaschka, Franz,Sheldrick, William S.
, p. 1078 - 1085 (2007/10/02)
The reaction P(CN)3 + CN- (as crown-6-sodium salt) leads via the spectroscopically identified P(CN)4- to a disproportionation PIII -> PI + PV.P(CN)2- and P2C10N102- (1) have
Reactions of Hexaphenylcarbodiphosphorane, IV. Reactions of Hexaphenylcarbodiphosphorane with Halogen Compounds. Diphosphaallyl Cations
Bestmann, Hans Juergen,Oechsner, Helmut
, p. 861 - 865 (2007/10/02)
Hexaphenylcarbodiphosphorane (1) undergoes nucleophilic displacement reaction with halogen compounds 3 with formation of compounds 5 which can be regarded as salts of the diphosphaallylcation. 1 reacts with bromoacetic ester 11 as base, with proton abstraction and formation of a carbanion 12 which gives rise to formation of (E)-cyclopropantricarboxylicacid ester (13).In an analogous way, 1 attacks isothiocyanatoaceticacid ester (14) with formation of an ionpair 15 which undergoes a cycloaddition with a second molecule 14 forming 16, which can be converted into the mercaptothiazol derivative 17 by treatment with HCl. - Key words: Hexaphenylcarbodiphosphorane Diphosphaallyl Cations, 13C NMR Spectra
A NEW METHOD FOR THE PREPARATION OF (2,2-DIPHENYLVINYLIDENE)-TRIPHENYLPHOSPHORANE AND ITS REACTION WITH CARBONYL COMPOUNDS
Verma, S.,Bokadia, M. M.
, p. 35 - 36 (2007/10/02)
Hexaphenylcarbodiphosphorane (I), prepared from triphenylphosphine and carbon tetrahalide, when treated with benzophenone in equimolar ratio, gave the ylide (2,2-diphenylvinylidene)triphenylphosphorane (II) which, upon further treatment with benzophenone, gave 1,3-tetraphenylallene (III) via Witting reaction.
A New Method for the Preparation of Carbodiphosphorane and Its Reaction with Carbonyl Compounds
Verma, Shubha,Athale, Meera,Bokadia, M. M.
, p. 1096 - 1097 (2007/10/02)
The simple and new method for the preparation of hexaphenylcarbodiphosphorane (II) involves the reaction of triphenylphosphine and carbon tetrahalide in 4 : 1 molar ratio .Reaction of II with carbonyl compounds affords phosphoranyl 1,2-oxaphosphetanes (IV-VI).