Phosphines organo

F Flexible, aqueous acrylic co-mixed with organic phosphinates, organo-cationic nano-dimensional clay, talc, zinc borate, and water. No halogenated compounds Intumescent Failed Failed... 

The stabilities of the [ML2R2] phosphines increase from Ni to Pt and for Ni" they are only isolable when R is an o-substituted aiyl. Those of Pt", on the other hand, are amongst the most stable cr-bonded organo-transition metal compounds while those of Pd" occupy an intermediate position. 

Primare Phosphine werden durch Reduktion von Phosphonsaureestern (vier Hy-drid-Aquivalenten eines Organo-silans) oder aus Dihalogen-phosphinen (zwei Hy-drid-Aquivalenten) bei 150-200° erhalten, wobei das Phosphin unmittelbar aus dem An-satz herausdestilliert werden kann z.B. ... 

Sekundare Phosphine werden durch Reduktion von Phosphinsauren und deren Derivaten mit Organo-silanen (wie die primaren Phosphine) bzw. giinstiger mit Trichlor-silan erhalten. 

Tertiare Phosphin-oxide werden mit Organo-silanen oder Trichlor-silan (auch in Ge-genwart von Oxo-Gruppen erfolgt selektive Reduktion2) in ahnlicher Weise zu tertiaren Phosphinen reduziert. 

Bis-[triphenylphosphin]-carbonyl-organo-rhodium(0) bzw. -iridium(O) sind aus den entsprechenden Dichloro-Komplexen bzw. Carbonyl-tris-[triphenyl-phosphin]-rhodium(0) bzw.-iridium(O) aus den Chloro-Komplexen zuganglich7 ... 

Secondary phosphine chalcogenides (15a) exist in equilibrium with their chalcogenophosphinous acid tautomers (15b). This equilibrium sits far on the side of the chalcogenide tautomer 15a for virtually all organo R groups, to such an extent that it is difficult to even detect the presence of the acid tautomer 15b... 

The metal and ammonium salts of dithiophosphinic acids tend to exhibit far greater stability with respect to this thermal decomposition reaction, and consequently these acids are often prepared directly in their salt form for convenience and ease of handling. Alkali-metal dithiophosphinates are accessible from the reaction of diphosphine disulfides with alkali-metal sulfides (Equation 22) or from the reaction of alkali-metal diorganophosphides with two equivalents of elemental sulfur (Equation 23). Alternatively, they can be prepared directly from the parent dithiophosphinic acid on treatment with an alkali-metal hydroxide or alkali-metal organo reagent. Reaction of secondary phosphines with elemental sulfur in dilute ammonia solution gives the dithiophosphinic acid ammonium salts (Equation 24). 

Scheme 4. Li-mediated radical coupling of a vinylidene phosphine to give a bis(diphos-phinomethanide) complex. Reproduced with permission from W. Clegg et al., Organo-metallics 1998, 17, 5231. Copyright 1998, the American Chemical Society.

For general application of these chiral ligands, see (a) Kagan, H. B. Chiral Ligands for Asymmetric Catalysis in Morrison, J. D. ed. Asymmetric Synthesis, vol. 5, Chap. 1, Academic Press, New York, 1985. (b) Kagan, H. B., Sasaki, M. Optically Active Phosphines Preparation, Uses and Chiroptical Properties in Hartley, F. R. ed. The Chemistry of Organo Phosphorous Compounds, John Wiley Sons, New York, 1990, vol. 1, Chap. 3. 

Carbon tetrachloride-organo-phosphine, chlorides from alcohols with, 54, 63 CARBONYL CYANIDE, 51, 70 Carbonyl cyanide, with alcohols, 51, 72... 

In 2003 Jin and coworkers [13] reported on the synthesis of a novel nonionic water-soluble phosphine 3 by a two-step ethoxylation of 2-(diphenyl-phosphinojphenylamine. In this new family of nonionic phosphines the polyoxyethylene moieties are introduced into the amino group of organo-phosphines. 

Remarkably, the catalytic cycle is not controlled by the presence of phosphine ligands, but it is controlled by the organo group Y at the cobalt the neutral ligand L is displaced by the substrates in the initial step. Oxidative addition of two acetylenes results in a cobaltacycle that reacts with the nitrile to give the pyridine derivative with regeneration of the active [YCo] species. 

Thermolysis of organo azido phosphines produce organo cyclophosphazenes in high yields [25]. Recently, Guy Bertrand and coworkers have obtained a four membered cyclophosphazene [26-27] derivative, N2P2(NPr2)4 by photolyzing the corresponding azidophosphine (Eq. 12). 

Carbon tetrachloride-organo-phosphine, chlorides from... 

Includes bibliographical references and indexes. Contents v. 1. Primary, secondary, and tertiary phosphines, polyphosphines, and heterocyclic organo-phosphorus(III) compounds—v. 2. Phosphine oxides, sulphides, selenides, and tellurides—v. 3. Phosphonium salts, ylides, and phosphoranes. 

Figure 16 Examples of ring and cage structures formed by organo-silicon, -germanium and -tin phosphines...

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