Organophosphorus compound with pentavalent phosphorus having P=N bonds
Phosphazenes refer to classes of organophosphorus compounds featuring phosphorus(V) with a double bond between P and N. One class of phosphazenes have the formula R−N=P(−NR2)3. These phosphazenes are also known as iminophosphoranes and phosphine imides. They are superbases.[1] Another class of compounds called phosphazenes are represented with the formula (−N=P(−X)2−)n, where X = halogen, alkoxy group, amide and other organyl groups. One example is hexachlorocyclotriphosphazene (−N=P(−Cl)2−)3. Bis(triphenylphosphine)iminium chloride [Ph3P=N=PPh3]+Cl−is also referred to as a phosphazene, where Ph = phenyl group. This article focuses on those phosphazenes with the formula R−N=P(−NR2)3.
^Superbases for Organic Synthesis: Guanidines, Amidines, Phosphazenes and Related Organocatalysts Tsutomu Ishikawa ISBN 978-0-470-51800-7
Phosphazenes refer to classes of organophosphorus compounds featuring phosphorus(V) with a double bond between P and N. One class of phosphazenes have...
architectures are cyclolinear and cyclomatrix polymers in which small phosphazene rings are connected together by organic chain units. Other architectures...
alkylamines, such as methylamine imidazole benzimidazole histidine guanidine phosphazene bases hydroxides of quaternary ammonium cations or some other organic...
carbonate) (PTMC), polypropylene oxide (PPO), poly[bis(methoxy-ethoxy-ethoxy)phosphazene] (MEEP), etc. PEO exhibits the most promising performance as a solid...
sponge. Common superbases of this variety feature amidine, guanidine, and phosphazene functional groups. Strong superbases can be designed by utilizing various...
moisture sensitive. With water they convert to silanols or siloxanes. Phosphazene Paraformaldehyde Adamson, G. W.; Daly, J. J. (1970). "Crystal and Molecular...
hypothetical compound N≡PCl2 (phosphazyl dichloride). Its classification as a phosphazene highlights its relationship to benzene. There is large academic interest...
exist mainly as rings such as the trimer hexachlorophosphazene. The phosphazenes arise by treatment of phosphorus pentachloride with ammonium chloride:...
such as DBU or phosphazenes to give alkenyl nonaflates in high yields without formation of a discrete enolate. Use of the P2 phosphazene base at -30 to...
hypothetical compound N≡PF2 (phosphazyl difluoride). Its classification as a phosphazene highlights its relationship to benzene. Hexafluorophosphazene has a hexagonal...
potential catalysts for the synthesis of polyethylene. Aminophosphine Phosphazene Dehnicke, Kurt; Krieger, Matthias; Massa, Werner (February 1999). "Phosphoraneiminato...
acids, the Verkade base catalyzes a variety of condensation reactions. Phosphazenes are phosphorus(V) derivatives with the formula RN=P(NR2)3. Verkade, John...
aldehyde or a ketone. They also are components of the Staudinger ligation. Phosphazenes are analogues of iminophosphoranes with the formula (R2N)3P=NR' Zhu,...
four membered P2N2 ring systems and one of the major classes of cyclic phosphazene compounds. Bis(chloro)cyclodiphosphazanes, (cis-[ClP(μ-NR)]2) are important...
375–. ISBN 978-1-78262-433-2. Mario Gleria; Roger De Jaeger (2004). Phosphazenes: A Worldwide Insight. Nova Publishers. pp. 827–. ISBN 978-1-59033-423-2...
reactions with alkenes and alkynes, and reaction with phosphines to form phosphazenes. "The Exciting Chemistry of Tetraazidomethane", Klaus Banert, Young-Hyuk...
PHB, PVA, PNVP, P(HEMA),[clarification needed] p(biscarboxy-phenoxy-phosphazene), p(GEMA-sulfate), and others), or a hybrid of the two. In addition to...
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