Catalyst-free regio- and chemoselective addition of secondary phosphine oxides to isoquinolines
Sign Up to like & getrecommendations! 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
Catalyst-free selenylation of acylacetylenes with secondary phosphine selenides and water: A short-cut to bis(2-acylvinyl) selenides
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2017.09.031
Abstract: Abstract Secondary phosphine selenides react with acylacetylenes in water to form bis(2-acylvinyl) selenides. The reaction proceeds without catalyst and organic solvent under mild conditions (70–72 °C, 3 h), the corresponding divinyl selenides being isolated as a mixture… read more here.
Keywords: phosphine selenides; water; acylvinyl selenides; secondary phosphine ... See more keywords
Oxidative coupling of hydroxy- or aminoazobenzenes with secondary phosphine chalcogenides: Towards new media-responsive molecular switches
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2017.04.031
Abstract: Abstract One or two chalcogenophosphinate groups were introduced to the azobenzene scaffold via the oxidative cross-coupling reaction of 4-amino-, 4-hydroxy- and 4,4′-dihydroxyazobenzenes with secondary phosphine chalcogenides using the CCl4/Et3N system under mild conditions in 41–95%… read more here.
Keywords: media responsive; secondary phosphine; responsive molecular; oxidative coupling ... See more keywords
Facial conversion of secondary phosphine oxides R1R2P(O)H to chlorophosphines R1R2PCl by acetyl chloride
Sign Up to like & getrecommendations! 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
How Do Secondary Phosphine Oxides Interact with Silver Nanoclusters? Insights from Computation
Sign Up to like & getrecommendations! 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
Rhodium-Catalyzed Isomerization of a Bis(secondary phosphine) to an Unsymmetrical Diphosphine via P–C Cleavage and P–P and C–H Bond Formation
Sign Up to like & getrecommendations! Published in 2017 at "Organometallics"
DOI: 10.1021/acs.organomet.7b00515
Abstract: To develop Rh-catalyzed dehydrocoupling for stereocontrolled synthesis of P–P bonds, we prepared potential intermediates, chiral rhodium phosphine-phosphido complexes, and investigated their stoichiometric and catalytic transformations. Treatment of [Rh(diphos*)(COD)][X] with the bis(secondary phosphine) IsHPCH2PHIs (1, Is… read more here.
Keywords: phosphine; bis secondary; unsymmetrical diphosphine; secondary phosphine ... See more keywords
Three-Component Reaction of 3-Formyl-6-Methylchromone, Primary Amines, and Secondary Phosphine Oxides: A Synthetic and Mechanistic Study
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DOI: 10.1021/acsomega.2c07333
Abstract: A fast, mild, and efficient catalyst-free approach has been developed for the synthesis of chromonyl-substituted α-aminophosphine oxides by the three-component reaction of 3-formyl-6-methylchromone, primary amines, and secondary phosphine oxides at ambient temperature. Carrying out the… read more here.
Keywords: reaction; formyl methylchromone; phosphine oxides; secondary phosphine ... See more keywords
Secondary phosphine oxides stabilized Au/Pd nanoalloys: metal components-controlled regioselective hydrogenation toward phosphinyl (Z)-[3]dendralenes.
Sign Up to like & getrecommendations! Published in 2019 at "Chemical communications"
DOI: 10.1039/c9cc05928h
Abstract: A series of gold/palladium nanoalloys stabilized by secondary phosphine oxides have been prepared for the first time. The nanocatalysts exhibit excellent regio- and chemo-selectivity in the hydrogenation of conjugated enynes, providing a mild and highly… read more here.
Keywords: oxides stabilized; hydrogenation; phosphinyl dendralenes; secondary phosphine ... See more keywords
Secondary phosphine oxide-triggered selective oxygenation of a benzyl ligand on palladium.
Sign Up to like & getrecommendations! Published in 2020 at "Chemical communications"
DOI: 10.1039/d0cc05572g
Abstract: The oxygenation of a benzyl ligand in [PdBnCl(cod)] was dramatically accelerated by using secondary phosphine oxides (SPOs), selectively affording either BnOOH or BnOH, depending on the concentration of O2. The SPOs coordinate to palladium in… read more here.
Keywords: secondary phosphine; oxygenation benzyl; benzyl ligand;
Catalyst- and Solvent-Free Hydrophosphorylation of Ketones with Secondary Phosphine Oxides: Green Synthesis of Tertiary α-Hydroxyphosphine Oxides
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DOI: 10.1055/s-0040-1707945
Abstract: Tertiary α-hydroxyphosphine oxides have been synthesized via the catalyst- and solvent-free reaction between available secondary phosphine oxides and aliphatic, aromatic and heteroaromatic ketones at 20–62 °C in near to 96–98% yield. The developed method meets the… read more here.
Keywords: catalyst solvent; hydroxyphosphine oxides; hydroxyphosphine; secondary phosphine ... See more keywords
Oxidative Cross-Coupling of Cysteamine with Secondary Phosphine Chalcogenides: Aspects of Reaction Chemoselectivity
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DOI: 10.1134/s0012500820010048
Abstract: Abstract Cysteamine (2-aminoethanethiol) undergoes oxidative cross-coupling with secondary phosphine sulfides and phosphine selenides under mild conditions (room temperature, 2–5 h, CCl 4 /Et 3 N) to give products of monocoupling at the amino group (ethylchalcogenophosphinic… read more here.
Keywords: coupling cysteamine; cross coupling; oxidative cross; secondary phosphine ... See more keywords