4559-70-0Relevant articles and documents
An expedient access to γ-ketophosphine chalcogenides via the chemo-and regioselective addition of secondary phosphine chalcogenides to β,γ-ethylenic ketones
Artem’Ev, Alexander V.,Malysheva, Svetlana F.,Belogorlova, Nataliya A.,Protzuk, Nadezhda I.,Albanov, Alexander I.,Bagryanskaya, Irina Y.,Schmidt, Elena Y.,Gusarova, Nina K.,Trofimov, Boris A.
, p. 455 - 462 (2015)
γ-Ketophosphine chalcogenides, precursors for plethora of novel functionalized phosphine chalcogenides and phosphines, are synthesized by chemo-and regioselective addition of secondary phosphine chalcogenides to β,γ-ethylenic ketones under catalyst-and so
Metal-Free, Visible Light-Photocatalyzed Synthesis of Benzo[b]phosphole Oxides: Synthetic and Mechanistic Investigations
Quint, Valentin,Morlet-Savary, Fabrice,Lohier, Jean-Fran?ois,Lalevée, Jacques,Gaumont, Annie-Claude,Lakhdar, Sami
, p. 7436 - 7441 (2016)
Highly functionalized benzo[b]phosphole oxides were synthesized from reactions of arylphosphine oxides with alkynes under photocatalytic conditions by using eosin Y as the catalyst and N-ethoxy-2-methylpyridinium tetrafluoroborate as the oxidant. The reac
Extraction and coordination behavior of diphenyl hydrogen phosphine oxide towards actinides
Das, Dhrubajyoti,Gopakumar, Gopinadhanpillai,Brahmmananda Rao,Sivaraman,Sivaramakrishna, Akella,Vijayakrishna, Kari
, p. 3338 - 3352 (2017)
Extraction behavior of some selected actinides like U(VI), Th(IV), and Am(III) was investigated with three different H-phosphine oxides, viz. diphenyl hydrogen phosphine oxide (DPhPO), dihexyl hydrogen phosphine oxide (DHePO) and diphenyl phosphite (DPP).
Photochemistry and Photophysics of (1-Naphthoyl)diphenylphosphine Oxide
Zhao, Ningning,Strehmel, Bernd,Gorman, Anthony A.,Hamblett, Ian,Neckers, Douglas C.
, p. 7757 - 7765 (1999)
(l-Naphthoyl)diphenylphosphine oxide (1) was synthesized and characterized and its photochemistry investigated using emission spectroscopy, pulse radiolysis, and nanosecond laser flash photolysis. Fluorescence quantum yields are low in aprotic polar and nonpolar solvents. In methanol, as a result of hydrogen-bonding, change of S1 from an n,π* state to a π,π* state leads to the decrease in the rate constant for intersystem crossing and results, finally, in an increase in fluorescence. Preferential solvation was evaluated using the ET indicator "Reichardt's dye" (RD). ETN values were determined by gradually increasing the concentrations of methanol in methanol/acetonitrile mixtures. Fluorescence quantum yields correlate with the ETN values. Photolysis of 1 yields diphenyl[l-naphthoyl)oxy]phosphine (6), formed mainly via cage recombination of radicals. No radicals were detected by either nanosecond laser flash photolysis or pulse radiolysis of 1 in aprotic solvents. However, photolysis in methanol yields radicals when 1 is excited at 266 nm. The phosphinoyl radical can be quenched by either methyl methacrylate (MMA) or oxygen (kq = 5.0 × 107 and 5.3 × 108 M-1 s-1, respectively). Such radical generation most likely results from the singlet excited state.
Phosphinoyl radicals: Structure and reactivity. A laser flash photolysis and time-resolved ESR investigation
Jockusch, Steffen,Turro, Nicholas J.
, p. 11773 - 11777 (1998)
The photochemistry of a series of bis(acyl)phosphine oxides and the rate constants of the reactions of their phosphorus radicals with n-butylacrylate, thiophenol, bromotrichloromethane, oxygen, and methyl viologen have been investigated by laser flash pho
Electrochemical Oxidative C–H Phosphonylation of thiazole derivatives in ambient conditions
Li, Yang,Wu, Lei,Yang, Yan-Tong,Zhu, Jie,Zhu, Peng-Wei
, (2021/12/07)
We herein report a direct electrochemical dehydrogenative C–H phosphonylation of thiazoles derivatives with H2 evolution. Employing electricity as the green and sole oxidant, cheap metal as electrode, the anodic oxidation together with cathodic hydrogen evolution process provides a green and efficient strategy for C–H phosphonylation. A diverse range of phosphorus products were constructed under external metal and oxidant-free conditions at ambient temperature, featuring atom economy, simple operation and wide reaction scope.
Catalytic Cleavage of Unactivated C(aryl)-P Bonds by Chromium
Ling, Liang,Luo, Meiming,Tang, Jinghua,Yuan, Shuqing,Zeng, Xiaoming
supporting information, p. 1581 - 1586 (2022/03/14)
We describe here the coupling to transform aryl phosphine derivatives by the cleavage of unactivated C(aryl)-P bonds with chromium catalysis, allowing us to achieve the reaction with alkyl bromides and arylmagnesium reagents under mild conditions. Mechani
AlCl3-catalyzed C-H p hosphination of benzene: A mechanistic study
Duan, Haodong,Gao, Jun,Guo, Ge,Han, Yuxi,Leng, Kangwei,Li, Xinjin,Wang, Zhongwei,Xu, Xiaolei,Yu, Qing
, (2021/01/06)
The characteristics of the reaction for the preparation of dichlorophenylphosphine (DCPP) via benzene and PCl3 in the presence of AlCl3 were studied. Some unique characteristics were observed when a catalytic amount of AlCl3 was used. Namely, more than one mole of DCPP was obtained per mole AlCl3, the reaction solution was layered, and DCPP could be directly separated. Our mechanistic study showed that benzene reacted with PCl3 to form DCPP-AlCl3, and DCPP-AlCl3 dissociated into DCPP and AlCl3, continuing to catalyze this reaction. This resulted in the high catalytic efficiency of AlCl3. The layering of the reaction solution was caused by the immiscibility of DCPP-AlCl3 with the raw materials, greatly facilitating the dissociation process of DCPP-AlCl3. The formation of diphenylphosphorus chloride (DPC) was due to a continuous Friedel-Crafts reaction between DCPP and benzene. DPC cooperated with AlCl3 to form the stable coordination compound DPC-AlCl3 that did not dissociate and was responsible for the deactivation of AlCl3.