54086-38-3Relevant academic research and scientific papers
Organic Electron Acceptors Comprising a Dicyanomethylene-Bridged Acridophosphine Scaffold: The Impact of the Heteroatom
Schaub, Tobias A.,Brülls, Steffen M.,Dral, Pavlo O.,Hampel, Frank,Maid, Harald,Kivala, Milan
, p. 6988 - 6992 (2017)
Stable two-electron acceptors comprising a dicyanomethylene-bridged acridophosphine scaffold were synthesized and their reversible reduction potentials were efficiently tuned through derivatization of the phosphorus center. X-ray crystallographic analysis combined with NMR, UV/Vis, IR spectroscopic, and electrochemical studies, supported by theoretical calculations, revealed the crucial role of the phosphorus atom for the unique redox, structural, and photophysical properties of these compounds. The results identify the potential of these electron deficient scaffolds for the development of functional n-type materials and redox active chromophores upon further functionalization.
Generation and Nuclear Magnetic Resonance Studies of 9-Heteroanthracenide Anions: 9-Selena-, 9-Phospha-, and 9-Arsaanthracenides
Kasmai, Hamid S.,Femia, Joseph F.,Healy, Laura L.,Lauria, Michele R.,Lansdown, Mary E.
, p. 5461 - 5466 (1987)
The thermally stable heteroanthracenide ions 9d-g were generated upon exposure of the respective conjugate acids 8d-g to KNH2 in liquid NH3 and were studied by 1H, 13C, and 31P NMR.It is shown that 9d possesses a paratropic molecular frame, while 9e and 9f exhibit no detectable paramagnetic ring current effect.Possible electronic and steric interactions that may give rise to the observed NMR characteristics of 9e-g are discussed, and it is concluded that the carbanionic charge in these anions is substantially delocalized over the central ring involving the heteroatomic unit.
Electrosynthesis of Phosphacycles via Dehydrogenative C-P Bond Formation Using DABCO as a Mediator
Kurimoto, Yuji,Yamashita, Jun,Mitsudo, Koichi,Sato, Eisuke,Suga, Seiji
supporting information, p. 3120 - 3124 (2021/05/04)
The first electrochemical synthesis of diarylphosphole oxides (DPOs) was achieved under mild conditions. The practical protocol employs commercially available and inexpensive DABCO as a hydrogen atom transfer (HAT) mediator, leading to various DPOs in moderate to good yields. This procedure can also be applied to the synthesis of six-membered phosphacycles, such as phenophosphazine derivatives. Mechanistic studies suggested that the reaction proceeds via an electro-generated phosphinyl radical.
Palladium-catalyzed cyclization of bisphosphines to phosphacycles via the cleavage of two carbon-phosphorus bonds
Baba, Katsuaki,Masuya, Yoshihiro,Chatani, Naoto,Tobisu, Mamoru
supporting information, p. 1296 - 1299 (2017/08/14)
A catalytic method for the synthesis of dibenzophosphole derivatives using bisphosphines as the starting material is developed. The reaction proceeds through the cleavage of two carbonphosphorus bonds of the bisphosphine substrate. The reaction can also be used in the synthesis of six-membered phosphacycles.
Carbanionen-vermittelte Heterocyclisierungen: allgemeiner und regiospezifischer Zugang zu Dibenzophosphininonen durch Synthese-Aequivalente der anionischen Friedel-Crafts- und der entfernten Fries-Umlagerung
Gray, Matthew,Chapell, Brian J.,Taylor, Nicholas J.,Snieckus, Victor
, p. 1609 - 1611 (2007/10/03)
Keywords: Friedel-Crafts-Reaktionen; Fries-Umlagerungen; Heterocyclen; Phosphorverbindungen; Umlagerungen
