Articles with "phosphine oxides" as a keyword



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Bis(α-hydroxycycloalkyl)phosphine Oxides Obtained from White Phosphorus via Phosphine Oxide H3 PO: Synthesis, Molecular Structure, Coordination Properties and Biological Activity.

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Published in 2020 at "ChemPlusChem"

DOI: 10.1002/cplu.202000220

Abstract: Reaction of the electrochemically in situ from elemental white phosphorus generated phosphine oxide H3 PO in a single electrochemical cell, supplied with lead cathode and aluminium anode, with cyclic ketones (cyclopentanone and cyclohexanone) results in formation… read more here.

Keywords: phosphine oxide; white phosphorus; phosphine; bis ... See more keywords
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Effect of improved trialkyl phosphine oxides waste content on phase composition and density of spark plasma sintered Gd2Zr2O7 ceramics

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Published in 2021 at "International Journal of Energy Research"

DOI: 10.1002/er.6409

Abstract: As a rapid sintering method, spark plasma sintering (SPS) process has been widely applied to immobilize nuclear waste. In this work, trialkyl phosphine oxides (TRPO) were immobilized by the mixture of Gd2O3 and ZrO2 with… read more here.

Keywords: waste; spectroscopy; waste content; trialkyl phosphine ... See more keywords
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Benson group additivity values of phosphines and phosphine oxides: Fast and accurate computational thermochemistry of organophosphorus species

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Published in 2019 at "Journal of Computational Chemistry"

DOI: 10.1002/jcc.25740

Abstract: Composite quantum chemical methods W1X‐1 and CBS‐QB3 are used to calculate the gas phase standard enthalpy of formation, entropy, and heat capacity of 38 phosphines and phosphine oxides for which reliable experimental thermochemical information is… read more here.

Keywords: benson group; fast accurate; group additivity; phosphine oxides ... See more keywords
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Catalyst-free regio- and chemoselective addition of secondary phosphine oxides to isoquinolines

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Published in 2020 at "Russian Chemical Bulletin"

DOI: 10.1007/s11172-020-2874-8

Abstract: Isoquinolines react with secondary phosphine oxides without catalyst (70–75 °C, 10–15 h, without solvent or in MeCN) to chemo- and regioselectively form previously unknown diadducts, 1,3-bis(diorganylphosphoryl)-1,2,3,4-tetrahydroisoquinolines, in high yields (85–95%). read more here.

Keywords: free regio; secondary phosphine; phosphine oxides; regio chemoselective ... See more keywords
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New hydrogen bonding motifs of phosphine oxides with a silanediol, a phenol, and chloroform

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Published in 2019 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2019.03.019

Abstract: Abstract Three new hydrogen bonding motifs of phosphine oxides involving a silanol, a phenol, and chloroform are described. The single crystal X-ray structures, in combination with the NMR and IR data of the new adducts… read more here.

Keywords: phosphine oxides; phenol chloroform; motifs phosphine; bonding motifs ... See more keywords
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Evaluation of bifunctional chiral phosphine oxide catalysts for the asymmetric hydrosilylation of ketimines

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Published in 2019 at "Tetrahedron"

DOI: 10.1016/j.tet.2019.130733

Abstract: Abstract A series of bifunctional phosphine oxides have been prepared and evaluated as catalysts for the trichlorosilane mediated asymmetric hydrosilylation of ketimines. bis-Phosphine oxides, hydroxy-phosphine oxides, and biaryl phosphine oxides all demonstrated good catalytic activity,… read more here.

Keywords: hydrosilylation ketimines; phosphine oxide; phosphine; phosphine oxides ... See more keywords
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Facial conversion of secondary phosphine oxides R1R2P(O)H to chlorophosphines R1R2PCl by acetyl chloride

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Published in 2020 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2019.151556

Abstract: Abstract A practically useful protocol for the reductive transformation of secondary phosphine oxides R1R2P(O)H to chlorophosphines R1R2PCl using acetyl chloride was disclosed. Various secondary phosphine oxides could be readily reduced to the corresponding chlorophosphines in… read more here.

Keywords: secondary phosphine; r1r2p chlorophosphines; oxides r1r2p; phosphine oxides ... See more keywords
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How Do Secondary Phosphine Oxides Interact with Silver Nanoclusters? Insights from Computation

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Published in 2018 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.8b06244

Abstract: Air-stable nanoparticles stabilized with secondary phosphine oxides (SPOs) can have a remarkable role as catalysts. Since size and activity depend both on the cluster-ligand interaction and the nature of the employed ligand, the present work… read more here.

Keywords: oxides interact; interact silver; silver nanoclusters; secondary phosphine ... See more keywords
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Visible-Light-Promoted Aerobic Oxyphosphorylation of α-Diazoesters with H-Phosphine Oxides.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c00198

Abstract: A visible-light-promoted aerobic oxyphosphorylation of α-diazoesters and H-phosphine oxides has been developed. Using air as the oxygen source, the reaction proceeded smoothly at room temperature under blue-light irradiation. The α-diazoesters, molecular oxygen, and H-phosphine oxides… read more here.

Keywords: aerobic oxyphosphorylation; oxyphosphorylation diazoesters; light promoted; phosphine oxides ... See more keywords
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Blue LED-Mediated Syntheses of Arylazo Phosphine Oxides and Phosphonates via N-P Bond Formation.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c02251

Abstract: The synthesis of (E)-diphenyl(aryldiazenyl)phosphine oxides and dialkyl (E)-(aryldiazenyl)phosphonates via visible light-mediated N-P bond formation between diazo species and phosphine oxides and phosphite derivatives, respectively, is described. The diazo species were generated via the reaction of… read more here.

Keywords: phosphonates via; phosphine oxides; blue led; bond formation ... See more keywords
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Synthesis of Unsymmetrical Tertiary Phosphine Oxides via Sequential Substitution Reaction of Phosphonic Acid Dithioesters with Grignard Reagents.

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Published in 2017 at "Organic letters"

DOI: 10.1021/acs.orglett.7b01796

Abstract: A facile synthetic method for unsymmetrical tertiary phosphine oxides is reported. Sequential treatment of phosphonodithioic acid S,S-di(p-tolyl) esters with two Grignard reagents enabled the stepwise introduction of different carbon substituents on the phosphorus atom. The… read more here.

Keywords: unsymmetrical tertiary; grignard reagents; tertiary phosphine; phosphine oxides ... See more keywords