62336-24-7Relevant articles and documents
Coordination of a Diphosphine-Ketone Ligand to Ni(0), Ni(I), and Ni(II): Reduction-Induced Coordination
Saes, Bartholomeus W. H.,Verhoeven, Dide G. A.,Lutz, Martin,Klein Gebbink, Robertus J. M.,Moret, Marc-Etienne
, p. 2710 - 2713 (2015)
The coordination chemistry of the diphosphine-ketone ligand 2,2′-bis(diphenylphosphino)benzophenone (Phdpbp) with nickel is reported. The ketone moiety does not bind to Ni(II) in the complex (Phdpbp)NiCl2, whereas reduction to Ni(I) or Ni(0) induces η2(C,O) coordination of the ketone to form the pseudotetrahedral complexes (Phdpbp)NiCl and (Phdpbp)Ni(PPh3). DFT calculations indicate that the metal-ketone bond is dominated by π back-donation; hence, Phdpbp functions as a hemilabile acceptor ligand in this series of complexes. (Chemical Equation Presented).
The structure of 2-(diphenylphosphino)phenyllithium: the significance of P-Li bonding
Harder, Sjoerd,Brandsma, Lambert,Kanters, Jan A.,Duisenberg, Albert,Lenthe, Joop H. van
, p. 143 - 154 (1991)
The solid state structure of 2-(diphenylphosphino)phenyllithiun*Et2O has been determined by a single crystal X-ray diffraction study.The crystal consists of dimeric aggregates in which the Li atoms are solvated by an additional diethyl ether molecule.The compound retains the dimeric structure in an apolar solvent (toluene) but in THF it exists in monomeric form.Ab initio calculations indicate a small but significant influence of P-Li interaction on the stability and structure of P-containing organolithium compounds.
ortho-Phosphoryl stabilized hypervalent iodosyl- and iodyl-benzene reagents
Meprathu, Bindu V.,Justik, Michael W.,Protasiewicz, John D.
, p. 5187 - 5190 (2005)
The synthesis and reactivity of a new IBX analogue (2-iodylphenyl)diphenyl- phosphine oxide 10 is described herein along with its analysis by single crystal X-ray diffraction.
Mixed Alkyl/Aryl Diphos Ligands for Iron-Catalyzed Negishi and Kumada Cross Coupling Towards the Synthesis of Diarylmethane
Ma, Xufeng,Wang, Han,Liu, Yao,Zhao, Xing,Zhang, Jun
, p. 5134 - 5140 (2021/11/16)
Mixed alkyl/aryl diphos ligands have been prepared and their application in iron-catalyzed cross coupling of benzylic chlorides with diaryl zinc (Negishi) or aryl Grignard reagents (Kumada) towards the synthesis of diarylmethane has been evaluated. The iron?diphos catalytic system exhibited the enhanced activity and selectivity in the two coupling reactions. The electron-rich mixed PPh2/PCy2 ligands outperformed their symmetrical PPh2 congeners, and led to decreased homocoupling byproduct formation. It indicates that the electronic effect of the ligands plays an important role in the catalytic performance. The Fe catalyst supported by L8 bearing an electron-rich PCy2 substituent and a sterically demanding tert-butyl on ethene backbone exhibited the best catalytic performance and good functional group tolerance in the two cross coupling reactions.
The Trityl-Cation Mediated Phosphine Oxides Reduction
Landais, Yannick,Laye, Claire,Lusseau, Jonathan,Robert, Frédéric
supporting information, p. 3035 - 3043 (2021/05/10)
Reduction of phosphine oxides into the corresponding phosphines using PhSiH3 as a reducing agent and Ph3C+[B(C6F5)4]? as an initiator is described. The process is highly efficient, reducing a broad range of secondary and tertiary alkyl and arylphosphines, bearing various functional groups in generally good yields. The reaction is believed to proceed through the generation of a silyl cation, which reaction with the phosphine oxide provides a phosphonium salt, further reduced by the silane to afford the desired phosphine along with siloxanes. (Figure presented.).
