Relevant bibliographies by topics / Phosphorus-centred radicals

Academic literature on the topic 'Phosphorus-centred radicals'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Phosphorus-centred radicals"

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Alberti, Angelo, Massimo Benaglia, M. Catherine Depew, W. Grant McGimpsey, Gian Franco Pedulli, and Jeffrey K. S. Wan. "Spin adducts between thioketones and phosphorus centred radicals." Tetrahedron 44, no. 12 (January 1988): 3693–700. http://dx.doi.org/10.1016/s0040-4020(01)85999-8.

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E. Brumwell, Julie, Nigel S. Simpkins, and Nicholas K. Terrett. "Radical cyclisations of dienes and enynes using phosphorus- and sulfur-centred radicals." Tetrahedron 50, no. 47 (January 1994): 13533–52. http://dx.doi.org/10.1016/s0040-4020(01)89360-1.

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Brumwell, Julie E., Nigel S. Simpkins, and Nicholas K. Terrett. "Cyclisation of dienes and enynes using phosphorus-centred radicals." Tetrahedron Letters 34, no. 7 (February 1993): 1215–18. http://dx.doi.org/10.1016/s0040-4039(00)77532-0.

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BRUMWELL, J. E., N. S. SIMPKINS, and N. K. TERRETT. "ChemInform Abstract: Radical Cyclizations of Dienes and Enynes Using Phosphorus- and Sulfur- Centred Radicals." ChemInform 26, no. 19 (August 18, 2010): no. http://dx.doi.org/10.1002/chin.199519056.

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Jessop, Christopher M., Andrew F. Parsons, Anne Routledge, and Derek Irvine. "Cyclisation of dienes using phosphorus-centred radicals to form organophosphorus adducts." Tetrahedron Letters 44, no. 3 (January 2003): 479–83. http://dx.doi.org/10.1016/s0040-4039(02)02610-2.

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BRUMWELL, J. E., N. S. SIMPKINS, and N. K. TERRETT. "ChemInform Abstract: Cyclization of Dienes and Enynes Using Phosphorus-Centred Radicals." ChemInform 24, no. 27 (August 20, 2010): no. http://dx.doi.org/10.1002/chin.199327235.

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Busfield, WK, ID Grice, and ID Jenkins. "The Reaction of Organophosphorus Radicals With Vinyl Acetate and Acrylonitrile in the Presence of an Aminoxyl Radical Scavenger." Australian Journal of Chemistry 48, no. 3 (1995): 625. http://dx.doi.org/10.1071/ch9950625.

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Abstract:
The radical-trapping technique employing 1,1,3,3-tetramethyl-1,3-dihydro-2H-isoindol-2-yloxyl (1) as a radical scavenger has been used to study the reaction of diphenylphosphinoyl (2) and dimethoxyphosphinoyl (3) radicals with vinyl acetate and acrylonitrile. The phosphorus- centred radicals were generated by hydrogen abstraction from diphenylphosphine oxide and dimethyl phosphite respectively. Diphenylphosphine oxide was approximately three times as reactive as dimethyl phosphite towards hydrogen abstraction by t- butoxyl radicals and four times as reactive as tetrahydrofuran (towards abstraction of an α-hydrogen). Diphenylphosphinoyl radicals were found to be relatively nucleophilic and, in competition experiments, reacted about an order of magnitude faster with acrylonitrile than with vinyl acetate. Dimethoxyphosphinoyl radicals were rather less nucleophilic and reacted only twice as fast with acrylonitrile as they did with vinyl acetate. In the presence of excess aminoxyl (1), both diphenylphosphinoyl and dimethoxyphosphinoyl radicals were efficiently scavenged to produce stable phosphinic and phosphate esters respectively. The rate of scavenging was close to diffusion-controlled (c. 1.8×109 1. mol-1 s-1).
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Alberti, Angelo, and Andrew Hudson. "Nitroxide radicals formed by addition of phosphorus-centred radicals to aliphatic oximes. An electron paramagnetic resonance study." Journal of the Chemical Society, Faraday Transactions 86, no. 19 (1990): 3207. http://dx.doi.org/10.1039/ft9908603207.

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Alberti, Angelo, Andrew Hudson, and Gian Franco Pedulli. "Paramagnetic adducts in the reaction of 4-substituted pyridines and phosphorus-centred radicals." Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases 83, no. 1 (1987): 91. http://dx.doi.org/10.1039/f19878300091.

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10

Ionita, P., B. Gilbert, and A. Whitwood. "Generation of Oxygen-, Sulfur, Carbon-, Nitrogen- and Phosphorus- Centred Short-Lived Radicals Via One-Electron Oxidation with Stable Hydrazyl Radical." Letters in Organic Chemistry 1, no. 1 (January 1, 2004): 70–74. http://dx.doi.org/10.2174/1570178043488752.

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Dissertations / Theses on the topic "Phosphorus-centred radicals"

1

Grice, I. Darren, and n/a. "Some New Aspects of Radical Trapping Using an Aminoxyl Radical Trap." Griffith University. School of Science, 1993. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050915.150556.

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Abstract:
An investigation of the initiation mechanism in the free radical copolymerisation of acrylonitrile and vinyl acetate using the aminoxyl radical trapping technique, employing 1,1 ,3,3-tetramethyl-2,3-dihydro- 1 Hisoindol-2-yloxyl is reported. Based upon the experimental results, the mechanism of initiation is suggested as proceeding via the 'free monomer' mechanism. Additionally, the effect of Lewis acids on the initiation mechanism is reported. A study of the addition of phosphorus-centred radicals to alkenes and phenylacetylene, utilising the aminoxyl radical trapping technique is reported. The results indicate a decreased rate of addition by both diphenylphosphinyl and dimethoxyphosphinyl radicals to cyclic versus acyclic alkenes. In contrast to cyclic alkenes, both these phosphorus-centred radicals add readily to the triple bond of phenylacetylene. The stereochemistry of the addition of diphenyiphosphinyl and dimethoxyphosphinyl radicals and of the aminoxyl trap is discussed. The stereochemistry of the addition of benzoyloxyl radicals to a conformationally rigid alkene, trans-a2-octalin is reported. Attempts to examine the initiation mechanism in the free radical copolymerisation of styrene/maleic anhydride and of styrene/tetracyanoethylene utilising the aminoxyl radical trapping technique are described. Also described are attempts to synthesise some new phosphorus radical initiators.
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Grice, I. Darren. "Some New Aspects of Radical Trapping Using an Aminoxyl Radical Trap." Thesis, Griffith University, 1993. http://hdl.handle.net/10072/365216.

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Abstract:
An investigation of the initiation mechanism in the free radical copolymerisation of acrylonitrile and vinyl acetate using the aminoxyl radical trapping technique, employing 1,1 ,3,3-tetramethyl-2,3-dihydro- 1 Hisoindol-2-yloxyl is reported. Based upon the experimental results, the mechanism of initiation is suggested as proceeding via the 'free monomer' mechanism. Additionally, the effect of Lewis acids on the initiation mechanism is reported. A study of the addition of phosphorus-centred radicals to alkenes and phenylacetylene, utilising the aminoxyl radical trapping technique is reported. The results indicate a decreased rate of addition by both diphenylphosphinyl and dimethoxyphosphinyl radicals to cyclic versus acyclic alkenes. In contrast to cyclic alkenes, both these phosphorus-centred radicals add readily to the triple bond of phenylacetylene. The stereochemistry of the addition of diphenyiphosphinyl and dimethoxyphosphinyl radicals and of the aminoxyl trap is discussed. The stereochemistry of the addition of benzoyloxyl radicals to a conformationally rigid alkene, trans-a2-octalin is reported. Attempts to examine the initiation mechanism in the free radical copolymerisation of styrene/maleic anhydride and of styrene/tetracyanoethylene utilising the aminoxyl radical trapping technique are described. Also described are attempts to synthesise some new phosphorus radical initiators.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
Science, Environment, Engineering and Technology
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3

Hunt, Thomas. "Application of phosphorus-centred radicals towards the synthesis of (-)-quinine and related analogues." Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428405.

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4

Rawlinson, James G. T. "Phosphorus-centred radicals in synthesis : development of consecutive radical then ionic reactions and a novel approach towards cannabinoids." Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432245.

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