96688-83-4Relevant academic research and scientific papers
Low-valent chemistry: An alternative approach to phosphorus-containing oligomers
Kosnik, Stephanie C.,Farrar, Gregory J.,Norton, Erin L.,Cooper, Benjamin F. T.,Ellis, Bobby D.,Macdonald, Charles L. B.
, p. 13061 - 13069 (2014)
A convenient preparative approach to low-valent phosphorus-rich oligomers is presented. Ligand substitution reactions involving anionic diphosphine ligands of the form [(PR2)2N]- and [(PPh2)2C5H3]- and a triphosphenium bromide PI precursor result in the formation of phosphorus(I)-containing heterocycles, several of which are of types that have never been prepared before. The methodology described also allows for the preparation of the known heterocycle cyclo-[P(PPh2)N(PPh2)]2 in better yields and purity than the synthetic approach reported previously. Preliminary reactivity studies demonstrate the viability of such zwitterionic oligomers as multidentate ligands for transition metals.
Polyfunctional Ligands: Comparative Oxidative Coupling of - (E = CH, N) with Iodine
Braunstein, Pierre,Hasselbring, Reinhard,Tiripicchio, Antonio,Ugozzoli, Franco
, p. 37 - 38 (2007/10/02)
Iodine oxidation of the isoelectronic anions - and - affords the structurally characterized P-P coupling product Ph2P-N=PPh2-PPh2=N-PPh2 and the P-C coupling product (Ph2P)2C=PPh2-CH2-PPh2, respectively; the P-P heterocoupling product
