63403-56-5Relevant academic research and scientific papers
Structure and Non-Linear Optical properties of phosphine oxide derivatives
Lequan, Minh,Lequan, Rose Marie,Chane-Ching, Kathleen,Bassoul, Pierre,Bravic, Georges,Barrans, Yvette,Chasseau, Daniel
, p. 5 - 9 (1996)
The crystal structures of three different phosphine oxides derivatives possessing high quadratic susceptibilities, β, in solution have been investigated by X-ray diffraction. Slight modification of the transmitter chain leads to an acentric molecule; however, it is shown that these polar molecules have specific arrangements in the crystalline state, leading to a weak non-linear optical (NLO) response. The crystallographic data were entered into the MOPAC program to calculate the quadratic hyperpolarizability of each structure. The results were compared to those obtained by the use of standard internal data of the MOPAC program.
Synthesis and solvatochromism of some dipolar aryl-phosphonium and -phosphine oxide systems
Allen, David W.,Mifflin, Josephine P.,Skabara, Peter J.
, p. 293 - 298 (2007/10/03)
The synthesis is reported of a series of dipolar arylphosphonium salts bearing ferrocenylethenyl, 2-thienylethenyl, 4-dimethylaminophenylethenyl, or (4-dimethylaminophenyl)butadienyl electron-donor centres, together with a study of their course of alkaline hydrolysis, which provides a convenient synthetic route to related dipolar phosphine oxides. The phosphonium salts exhibit a modest degree of negative solvatochromism, whereas the related phosphine oxides show a small positive solvatochromic effect. In the case of the ferrocenyl systems, the electronic effects of the phosphorus acceptor group on the ferrocene unit have been studied by cyclic voltammetry.
Aromatic Phosphines with Second Order Substituents, XVI. - Phenylogous PO-activated Olefination: Synthesis of 4'-Donator Substituted 4-(Diphenylphosphinyl)stilbenes
Schiemenz, Guenter Paulus,Finzenhagen, Manfred
, p. 1476 - 1484 (2007/10/02)
Being a -M substituent, the 4-diphenylphosphinyl group acidifies the methyl group of toluene to a similar degree as a 4-cyano group.The carbanion formed by deprotonation reacts with N-benzylidene anilines to yield 4-(diphenylphosphinyl)stilbenes.In these, UV-spectroscopically the phosphorus on the one hand behaves like a -M substituent, on the other hand it acts as a barrier to through-conjugation.
Synthesis of trans-4-Diphenylphosphinyl Stilbenes
Gloyna, D.,Alder, L.,Henning, H.-G.,Koeppel, H.,Siegmund, M.,Schleinitz, K.-D.
, p. 237 - 246 (2007/10/02)
The reaction of 4-tolyl-diphenylphosphine oxide with N-bromosuccinimide results in 4-diphenylphosphinyl benzylbromide 5 which can be easily converted to (4-diphenylphosphinyl)-benzyl triphenylphosphonium bromide 6 and (4-diphenylphosphinyl)-benzyl diphenylphosphine oxide 7, respectively.In the presence of strong bases 6 and 7 react with aromatic aldehydes 8 to the 4-diphenylphosphinyl substituted stilbenes 1.The yields depend on the nature of base and solvent.The trans configuration of 1 is determined by i.r. and 1H-n.m.r. measurements.
