scholarly journals Di(hydroperoxy)alkane Adducts of Phosphine Oxides: Safe, Solid, Stoichiometric, and Soluble Oxidizing Agents

2017 ◽  
Vol 23 (67) ◽  
pp. 16998-17009 ◽  
Author(s):  
Shin Hye Ahn ◽  
Nattamai Bhuvanesh ◽  
Janet Blümel
Keyword(s):  
Phosphine Oxides ◽  
Oxidizing Agents

scholarly journals Di(hydroperoxy)alkane Adducts of Phosphine Oxides: Safe, Solid, Stoichiometric, and Soluble Oxidizing Agents

2017 ◽  
Vol 23 (67) ◽  
pp. 16919-16919
Author(s):  
Shin Hye Ahn ◽  
Nattamai Bhuvanesh ◽  
Janet Blümel
Keyword(s):  
Phosphine Oxides ◽  
Oxidizing Agents

Hydrogen Peroxide and Di(hydroperoxy)propane Adducts of Phosphine Oxides as Stoichiometric and Soluble Oxidizing Agents

2015 ◽  
Vol 127 (45) ◽  
pp. 13539-13543 ◽  
Author(s):  
Shin Hye Ahn ◽  
Kyle J. Cluff ◽  
Nattamai Bhuvanesh ◽  
Janet Blümel
Keyword(s):  
Hydrogen Peroxide ◽  
Phosphine Oxides ◽  
Oxidizing Agents

Hydrogen Peroxide and Di(hydroperoxy)propane Adducts of Phosphine Oxides as Stoichiometric and Soluble Oxidizing Agents

2015 ◽  
Vol 54 (45) ◽  
pp. 13341-13345 ◽  
Author(s):  
Shin Hye Ahn ◽  
Kyle J. Cluff ◽  
Nattamai Bhuvanesh ◽  
Janet Blümel
Keyword(s):  
Hydrogen Peroxide ◽  
Phosphine Oxides ◽  
Oxidizing Agents

Synthesis and Solid-State Structure of (4-Hydroxy-3,5-diiodophenyl)phosphine Oxides. Dimeric Motifs with the Assistance of O-H···O=P Hydrogen Bonds

2015 ◽  
Vol 19 (5) ◽  
pp. 469-474 ◽  
Author(s):  
Nicholas Bewick ◽  
Agata Arendt ◽  
Yan Li ◽  
S.awomir Szafert ◽  
Tadeusz Lis ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Phosphine Oxides ◽  
State Structure ◽  
Solid State Structure

Sterically Crowded Heterocycles. III. A General Approach to Imidazo[1,2-a]pyridines by Ferricyanide Oxidation of Quaternary Pyridinium Salts

1996 ◽  
Vol 61 (1) ◽  
pp. 126-138 ◽  
Author(s):  
Richard Kubík ◽  
Stanislav Böhm ◽  
Iveta Ruppertová ◽  
Josef Kuthan
Keyword(s):  
Potassium Hydroxide ◽  
Potassium Ferricyanide ◽  
Pyridinium Salts ◽  
Oxidizing Agents ◽  
Quaternary Pyridinium Salts ◽  
Substituted 1

Substituted 1-(pyridin-2-yl)-2,4,6-triphenylpyridinium perchlorates 1b-1e were converted with potassium ferricyanide and potassium hydroxide to sterically crowded 2-phenyl-3-[(Z)-1,3-diphenyl-3-oxopropenyl]imidazo[1,2-a]pyridines 2b-2e accompanied by minor isomeric 2-benzoyl-3,5-diphenyl-1-(pyridin-2-yl)pyrroles 3c-3e. 4-Phenyl-2,6-di(4-substituted phenyl)-1-(pyridin-2-yl)pyridinium salts 4a, 4b gave exclusively corresponding imidazo[1,2-a]pyridines 5a, 5b while the ferricyanide oxidation of 1-(5-iodo- and 5-cyanopyridin-2-yl)-2,4,6-triphenylpyridinium perchlorates 6a, 6b led to mixtures of major imidazo[1,2-a]pyridines 7a-7c and minor pyrroles 8a-8c. Some mechanistic aspects of the oxidation procedure are discussed in connection with a resistance of 2,6-diphenyl-1,3,5-trimethylpyridinium perchlorate (9c) towards the oxidizing agents.

scholarly journals Microwaves as “Co-Catalysts” or as Substitute for Catalysts in Organophosphorus Chemistry

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1196
Author(s):  
György Keglevich
Keyword(s):  
Coupling Reaction ◽  
Diels Alder ◽  
Typical Case ◽  
Conventional Heating ◽  
Phosphine Oxides ◽  
Phosphonic Acids ◽  
Co Catalysts ◽  
Mw Irradiation ◽  
Organophosphorus Chemistry ◽  
Hydrolysis Of

The purpose of this review is to summarize the importance of microwave (MW) irradiation as a kind of catalyst in organophosphorus chemistry. Slow or reluctant reactions, such as the Diels-Alder cycloaddition or an inverse-Wittig type reaction, may be performed efficiently under MW irradiation. The direct esterification of phosphinic and phosphonic acids, which is practically impossible on conventional heating, may be realized under MW conditions. Ionic liquid additives may promote further esterifications. The opposite reaction, the hydrolysis of P-esters, has also relevance among the MW-assisted transformations. A typical case is when the catalysts are substituted by MWs, which is exemplified by the reduction of phosphine oxides, and by the Kabachnik–Fields condensation affording α-aminophosphonic derivatives. Finally, the Hirao P–C coupling reaction may serve as an example, when the catalyst may be simplified under MW conditions. All of the examples discussed fulfill the expectations of green chemistry.

Bright photo- and triboluminescence of centrosymmetric Eu(III) and Tb(III) complexes with phosphine oxides containing azaheterocycles

2021 ◽  
Author(s):  
Yuliya Bryleva ◽  
Alexander Artem'ev ◽  
Ludmila Alexsandrovna Glinskaya ◽  
Marianna I Rakhmanova ◽  
Denis G. Samsonenko ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Phosphine Oxides

Six centrosymmetric mononuclear Eu3+ and Tb3+ complexes of the type [LnL2(hfac)3] have been synthesized employing diphenyl(pyridin-2-yl)phosphine oxide (Ph2P(O)Py), diphenyl(pyridimin-2-yl)phosphine oxide (Ph2P(O)Pym), and diphenyl(pyrazin-2-yl)phosphine oxide (Ph2P(O)Pyr) as supporting ligands (L). The...

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