Results 241 to 250 of about 19,048 (288)

New Class of Phosphine Oxide Donor-Based Supramolecular Coordination Complexes from an in Situ Phosphine Oxidation Reaction or Phosphine Oxide Ligands

Inorganic Chemistry, 2013
A one-pot, multicomponent, coordination-driven self-assembly approach was used to synthesize the first examples of neutral bridging phosphine oxide donor-based supramolecular coordination complexes. The complexes were self-assembled from a fac-Re(CO)3 acceptor, an anionic bridging O donor, and a neutral soft phosphine or hard phosphine oxide donor.
Bhaskaran, Shankar, Palani, Elumalai, Ramasamy, Shanmugam, Virender, Singh, Dhanraj T, Masram, Malaichamy, Sathiyendiran   +5 more
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Highly Chemoselective Metal-Free Reduction of Phosphine Oxides to Phosphines

Journal of the American Chemical Society, 2012
Unprecedented chemoselective reductions of phosphine oxides to phosphines proceed smoothly in the presence of catalytic amounts of specific Brønsted acids. By utilizing inexpensive silanes, e.g., PMHS or (EtO)(2)MeSiH, other reducible functional groups such as ketones, aldehydes, olefins, nitriles, and esters are well-tolerated under optimized ...
Yuehui, Li, Liang-Qiu, Lu, Shoubhik, Das, Sabine, Pisiewicz, Kathrin, Junge, Matthias, Beller   +5 more
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P-Arylation: Arynes to Aryl-Phosphonates, -Phosphinates, and -Phosphine Oxides

Organic Letters, 2013
Synthesis of organo-phosphorus compounds and their application in organic synthesis and life sciences has been a topic of contemporary interest. Michaelis-Arbuzov reaction is the most extensively utilized method for their preparation, which works well only with aliphatic halides.
Ranjeet A, Dhokale, Santosh B, Mhaske
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Oxidation of Phosphines by Supercritical Nitrous Oxide

Organic Letters, 1999
Despite its reputation for lack of reactivity at moderate temperatures, nitrous oxide is capable of oxidizing at least one class of organic compounds, the phosphines, at temperatures at or below 100 °C. The use of supercritical N2O as both the solvent and the reactant simplifies the isolation of the products and allows one to avoid the use of flammable
Scott Poh, Raquel Hernandez, Mayuko Inagaki, Philip G. Jessop   +3 more
openaire   +1 more source

Phosphorylation of Furfural by Secondary Phosphine Oxides.

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
N. I. Ivanova, N. K. Gusarova, E. A. Nikitina, S. A. Medvedeva, M. L. Al'pert, B. A. Trofimov   +5 more
openaire   +1 more source

New Dimethyl(Methylenoxyaryl)Phosphine Oxides

Phosphorus, Sulfur, and Silicon and the Related Elements, 1990
Abstract From dimethyl-chloromethyl-phosphine oxides and sodium phenolates of the corresponding mono-, di-and triphenols are prepared by the Williamson reaction new dimethyl(methyleneoxyaryl)phosphine oxides containing one, two or three phosphoryl groups.
S. Varbanov, T. Tosheva, G. Borisov
openaire   +1 more source

Selective reduction of allenyl(diphenyl)phosphine oxides to allyl(diphenyl)phosphine oxides

Russian Journal of Organic Chemistry, 2017
The reduction of allenyl(diphenyl)phosphine oxides with HSiCl3 or LiAlH4 selectively afforded the corresponding allyl(diphenyl)phosphine oxides. 3-Methylbut-2-en-1-yl(diphenyl)phosphine oxide reacted with AlCl3 to give a mixture of 4,4-dimethyl-1-phenyl-1,2,3,4-tetrahydro-λ5-phosphinoline 1-oxide and 4,4-dimethyl-1-phenyl-1,4-dihydro-λ5-phosphinoline 1-
S. V. Lozovskiy, M. I. Aleksandrova, A. V. Vasilyev   +2 more
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New trigonal tris(phosphine oxides)

Russian Chemical Bulletin, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
S. A. Pisareva, P. V. Petrovskii, K. A. Lyssenko, M. Yu. Antipin, E. E. Nifant'ev   +4 more
openaire   +1 more source

Preparation of functionalized phosphine oxides and phosphine sulfides

2014
(±)-tert-Butylphenylphosphinothioic acid was resolved into (Rp)-(+) tert-butylphenylphosphinothioic acids 129 according to a standard procedure. The (±)- and (Rp)-phosphinothioic acids were converted into (±)- and (Rp)-tert-butylphenylthionophosphinochloridates 139 respectively by treatment with either thionyl chloride or oxalyl chloride in ...
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On The Interactions Of Allylic Phosphines And Phosphine Oxides With n-Butyllithium

2023
The thesis explores the reactivity of allylic diphenyl phosphines and phosphine oxides with the basic reagent n-butyllithium. The lithiated intermediates were explored and characterised to understand their structure. They were then reacted with aldehydes and ketones to explore the utility of such reactions.
openaire   +1 more source