Results 21 to 30 of about 19,150 (267)

Two tris(3,5-disubstituted phenyl)phosphines and their isostructural PV oxides

Acta Crystallographica Section E: Crystallographic Communications, 2018
The crystal structures of tris(3,5-dimethylphenyl)phosphine (C24H27P), (I), tris(3,5-dimethylphenyl)phosphine oxide (C24H27OP), (II), tris(4-methoxy-3,5-dimethylphenyl)phosphine (C27H33O3P), (III), and tris(4-methoxy-3,5-dimethylphenyl)phosphine oxide ...
Nathan D. D. Hill, René T. Boeré
doaj   +1 more source

A Sensitive Impedimetric Sensor Based on Biosourced Polyphosphine Films for the Detection of Lead Ions

Chemosensors, 2020
In this work, impedimetric sensors were developed for the detection of the four WFD heavy metals Pb2+, Cd2+, Hg2+ and Ni2+, by the modification of a gold electrode with four partially biosourced polyphosphine polymers.
Taha Chabbah, Houyem Abderrazak, Radhia Souissi, Patrice Saint-Martin, Herve Casabianca, Saber Chatti, Regis Mercier, Ilhem Rassas, Abdelhamid Errachid, Mohamed Hammami, Nicole Jaffrezic-Renault   +10 more
doaj   +1 more source

Synthesis and photophysical properties of novel benzophospholo[3,2-b]indole derivatives

Beilstein Journal of Organic Chemistry, 2017
The parent benzophospholo[3,2-b]indole was prepared by the reaction of dichlorophenylphosphine with a dilithium intermediate, which was prepared in two steps from 2-ethynyl-N,N-dimethylaniline.
Mio Matsumura, Mizuki Yamada, Atsuya Muranaka, Misae Kanai, Naoki Kakusawa, Daisuke Hashizume, Masanobu Uchiyama, Shuji Yasuike   +7 more
doaj   +1 more source

Unusual phosphine oxidation: new triazolopyridyl-quinolyl phosphine oxide fluorescent dyes

RSC Advances, 2015
3-(2-Pyridyl)-[1,2,3]triazolo[1,5-a]quinolylphosphines suffer an unusual phosphine oxidation due to their special geometry that allows a σ-donation of the nitrogen (N1) lone pair to phosphorus.
Ballesteros-Garrido, Rafael, Abarca González, Belén, Ballesteros Campos, Rafael, Colobert, Françoise, Leroux, Frederic R., Garcia-España Monsonis, Enrique   +5 more
openaire   +2 more sources

Biphenylic Bisphosphines through ortho-Metalation of Aryldiphenylphosphine Oxides

CHIMIA, 1996
Diphenyl-(2-trifluoromethyl)phosphine oxide was metalated next to the diphenylphosphinoyl group with LITMP. Upon iodination and Ullmann coupling, the corresponding 3,3?-disubstituted bis(phosphine oxide) was obtained. When phenyllithium was used
Olivier Desponds
doaj   +2 more sources

Catalyst-free photooxidation of triarylphosphines under aerobic conditions

Journal of Saudi Chemical Society, 2015
A new method for the photooxidation of triarylphosphines into the corresponding oxides is developed. In this new protocol, neither a catalyst nor an additive is required. The greenest oxidant, oxygen in air atmosphere, is used.
Aishun Ding, Yu Wang, Ramon Rios, Jing Sun, Han Li, Hao Guo   +5 more
doaj   +1 more source

Phenolic 3° Phosphine Oxides as a Class of Metal-Free Catalysts for the Activation of C–O Bonds in Aliphatic Alcohols: Direct Synthesis of Catalyst Candidates, and Kinetic Studies

Inorganics, 2022
It was recently reported that a (2-hydroxybenzyl)phosphine oxide (2-HOBPO) can serve as a phosphorus-centered catalyst for the stereo-invertive coupling of aliphatic alcohols and acidic pronucleophiles (akin to a Mitsunobu reaction, but without ...
Matthew A. Martin, Sadie L. Brown, Danielle R. Beres, Wrebekah M. Frederic, Ashley M. Banks, Aaron J. Bloomfield   +5 more
doaj   +1 more source

Synthesis of Unsymmetrical Bis(phosphine) Oxides and Their Phosphines via Secondary Phosphine Oxide Precursors

Journal of Inorganic and Organometallic Polymers and Materials, 2019
The unsymmetrical bidentate phosphine ligands (Me)2PCH2CH2CH2P(Et)2 (14), (Me)2PCH2CH2CH2P(iPr)2 (15), (Me)2PCH2CH2CH2P(Cy)2 (16), and (Me)2PCH2CH2CH2P(Ph)2 (17) were synthesized using air–stable phosphine oxide intermediates. In the first step, sodium phosphinites formed by deprotonation of (Me)2P(O)H, (Et)2P(O)H, and (iPr)2P(O)H were alkylated by 1 ...
James R. Pedroarena, Bryan P. Nell, Lev N. Zakharov, David R. Tyler   +3 more
openaire   +3 more sources

Tailoring the Properties of Functional Materials With N‐Oxides

Advanced Functional Materials, EarlyView.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich, Michelle Kobus, Shirin Mesgarha, Erica Moretto, Laurens Grosche, Wolfgang Maison   +5 more
wiley   +1 more source

Interactions of phosphate, phosphine oxide and phosphoramide ligands with Th(IV)

Results in Chemistry
The complexation behavior of phosphate, phosphine oxide, and phosphoramide ligands with Th(IV) is investigated at the Density Functional Theory (DFT) level.
Aditya Ramesh Sachin, Gopinadhanpillai Gopakumar, Cherukuri Venkata Siva Brahmananda Rao   +2 more
doaj   +1 more source