Skip to content

Research at St Andrews

John Christopher Walton

Person

  1. 2017
  2. E-pub ahead of print

    Dealkanative main group couplings across the peri-gap

    Taylor, L. J., Buehl, M., Chalmers, B. A., Ray, M. J., Wawrzyniak, P., Walton, J. C., Cordes, D. B., Slawin, A. M. Z., Woollins, J. D. & Kilian, P. 30 Nov 2017 In : Journal of the American Chemical Society. In press

    Research output: Contribution to journalArticle

  3. E-pub ahead of print

    N- to C-sulfonyl photoisomerisation of dihydropyridinones: a synthetic and mechanistic study

    Yeh, P-P., Taylor, J. E., Stark, D. G., Daniels, D. S. B., Fallan, C., Walton, J. C. & Smith, A. D. 16 Oct 2017 In : Organic & Biomolecular Chemistry. In press

    Research output: Contribution to journalArticle

  4. Published
  5. 2016
  6. Published

    A valuable upgrade to the portfolio of cycloaddition reactions

    Walton, J. C. 9 Jun 2016 In : Angewandte Chemie International Edition. 55, 25, p. 7034-7036 3 p.

    Research output: Contribution to journalArticle

  7. Published

    Synthetic strategies for 5- and 6-membered ring azaheterocycles facilitated by iminyl radicals

    Walton, J. C. 18 May 2016 In : Molecules. 21, 5

    Research output: Contribution to journalReview article

  8. Published

    Identification of products from canthaxanthin oxidation

    Mordi, R. C. & Walton, J. C. 15 Apr 2016 In : Food Chemistry. 197, Part A, p. 836-840 5 p.

    Research output: Contribution to journalArticle

  9. Published

    Functionalised oximes: emergent precursors for carbon-, nitrogen- and oxygen-centred radicals

    Walton, J. C. 7 Jan 2016 In : Molecules. 21, 1, 23 p., 63

    Research output: Contribution to journalReview article

  10. 2015
  11. Published

    Bicarbonate and alkyl carbonate radicals: structural integrity and reactions with lipid components

    Buehl, M., DaBell, P., Manley, D., McCaughan, R. & Walton, J. C. 30 Dec 2015 In : Journal of the American Chemical Society. 137, 51, p. 16153–16162

    Research output: Contribution to journalArticle

  12. Published

    Preparative semiconductor photoredox catalysis: an emerging theme in organic synthesis

    Manley, D. W. & Walton, J. C. 9 Sep 2015 In : Beilstein Journal of Organic Chemistry. 11, p. 1570-1582 13 p.

    Research output: Contribution to journalReview article

  13. Published

    The games radicals play: special issue on free radicals and radical ions

    Walton, J. C. & Williams, F. Feb 2015 In : Molecules. 20, 2, p. 2831-2834 4 p.

    Research output: Contribution to journalEditorial

  14. 2014
  15. Published
  16. Published

    A Clean and Selective Radical Homocoupling Employing Carboxylic Acids with Titania Photoredox Catalysis

    Manley, D. W. & Walton, J. C. 17 Oct 2014 In : Organic Letters. 16, 20, p. 5394-5397 4 p.

    Research output: Contribution to journalArticle

  17. Published

    Hydrogenations without hydrogen: titania photocatalyzed reductions of maleimides and aldehydes

    Manley, D. W., Buzzetti, L., MacKessack-Leitch, A. & Walton, J. C. 24 Sep 2014 In : Molecules. 19, 9, p. 15324-15338 15 p.

    Research output: Contribution to journalArticle

  18. Published
  19. Published
  20. Published

    Titania-promoted carboxylic acid alkylations of alkenes and cascade addition-cyclizations

    Manley, D. W., McBurney, R. T., Walton, J. C., Mills, A., O'Rourke, C. & Miller, P. 7 Feb 2014 In : Journal of Organic Chemistry. 79, 3, p. 1386-1398 13 p.

    Research output: Contribution to journalArticle

  21. 2013
  22. Published

    Interplay of ortho- with spiro-cyclisation during iminyl radical closures onto arenes and heteroarenes

    Walton, J. C. & McBurney, R. T. Jun 2013 In : Beilstein Journal of Organic Chemistry. 9, p. 1083-1092 10 p.

    Research output: Contribution to journalArticle

  23. Published

    Dissociation or cyclization: options for a triad of radicals released from oxime carbamates

    McBurney, R. T. & Walton, J. C. 13 May 2013 In : Journal of the American Chemical Society. 135, 19, p. 7349–7354 6 p.

    Research output: Contribution to journalArticle

  24. Published

    Rapid and Selective Spiro-Cyclisations of O-Centred Radicals onto Aromatic Acceptors

    Walton, J. C., McBurney, R. T., Eisenschmidt, A. & Slawin, A. M. Z. Mar 2013 In : Chemical Science. 4, p. 2028-2035 8 p.

    Research output: Contribution to journalArticle

  25. 2012
  26. Published

    An all-purpose preparation of oxime carbonates and resultant insights into the chemistry of alkoxycarbonyloxyl radicals

    McBurney, R. T., Harper, A. D., Slawin, A. M. Z. & Walton, J. C. Dec 2012 In : Chemical Science. 3, 12, p. 3436-3444 9 p.

    Research output: Contribution to journalArticle

  27. Published

    Analysis of Radicals by EPR

    Walton, J. C. 2012 Encyclopedia of Radicals in Chemistry, Biology and Materials. Chatgilialoglu, C. & Studer, A. (eds.). Chichester: John Wiley and Sons, p. 147-174

    Research output: Chapter in Book/Report/Conference proceedingEntry for encyclopedia/dictionary

  28. Published

    Microwave assisted radical organic syntheses

    McBurney, R. T., Portela Cubillo, F. & Walton, J. C. 2012 In : RSC Advances. 2, 4, p. 1264-1274

    Research output: Contribution to journalArticle

  29. Published

    Unconventional Titania Photocatalysis: Direct Deployment of Carboxylic Acids in Alkylations and Annulations

    Manley, D., McBurney, R. T., Miller, P., Howe, R. F., Rhydderch, S. & Walton, J. C. 2012 In : Journal of the American Chemical Society. 134, 33, p. 13580-13583

    Research output: Contribution to journalArticle

  30. 2011
  31. Published

    Electron Paramagnetic Resonance and Computational Studies of Radicals Derived from Boron-Substituted N-Heterocyclic Carbene Boranes

    Walton, J. C., Brahmi, M., Montot, J., Fensterbank, I., Malacria, M., Curran, D. P. & Lacote, E. 2011 In : Journal of the American Chemical Society. 133, 26, p. 10312-10321

    Research output: Contribution to journalArticle

  32. Published

    UV promoted phenanthridine syntheses from oxime carbonate derived iminyl radicals

    McBurney, R. T., Slawin, A. M. Z., Smart, L. A., Yu, Y. & Walton, J. C. 2011 In : Chemical Communications. 47, 28, p. 7974-7976 3 p.

    Research output: Contribution to journalArticle

  33. 2010
  34. Published

    EPR and pulsed ENDOR study of intermediates from reactions of aromatic azides with group 13 metal trichlorides

    Walton, J. C., Bencivenni, G., Cesari, R., Nanni, D. & El Mkami, H. Sep 2010 In : Beilstein Journal of Organic Chemistry. 6, p. 713-725

    Research output: Contribution to journalArticle

  35. Published

    EPR Studies of the Generation, Structure, and Reactivity of N-Heterocyclic Carbene Borane Radicals

    Walton, J. C., Brahmi, M. M., Fensterbank, L., Lacote, E., Malacria, M., Chu, Q., Ueng, S-H., Solovyev, A. & Curran, D. P. 2010 In : Journal of the American Chemical Society. 132, 7, p. 2350-2358

    Research output: Contribution to journalArticle

  36. Published

    EPR and ENDOR spectroscopic study of the reactions of aromatic azides with gallium trichloride.

    Walton, J. C., Bencivenni, G., Cesari, R., Nanni, D. & El Mkami, H. 2010 In : Organic & Biomolecular Chemistry. p. 5097-5104

    Research output: Contribution to journalArticle

  37. 2009
  38. Published

    5-Exo-Cyclizations of Pentenyliminyl Radicals: Inversion of the gem-Dimethyl Effect.

    Walton, J. C., Portela Cubillo, F., Alonso-Ruiz, R. & Sampedro, D. 2009 In : Journal of Physical Chemistry A. 113, p. 10005-10012

    Research output: Contribution to journalArticle

  39. Published
  40. Published

    Microwave-promoted Syntheses of Quinazolines and Dihydroquinazolines from 2-Aminoarylalkanone O-Phenyl Oximes.

    Walton, J. C., Portela Cubillo, F. & Scott, J. S. 2009 In : Journal of Organic Chemistry. 74, p. 4934-4942

    Research output: Contribution to journalArticle

  41. Published

    N-Heterocyclic Carbene Boryl Radicals: A New Class of Boron-Centered Radical

    Ueng, S. E., Solovyev, A., Yuan, X., Geib, S. J., Fensterbank, L., Lacote, E., Malacria, M., Newcomb, M., Walton, J. C. & Curran, D. P. 2009 In : Journal of the American Chemical Society. 131, 31, p. 11256-11262

    Research output: Contribution to journalArticle

  42. 2008
  43. Published

    Dioxime oxalates; new iminyl radical precursors for syntheses of N-heterocycles.

    Portela Cubillo, F., Lymer, J., Scanlan, E. M., Scott, J. S. & Walton, J. C. Dec 2008 In : Tetrahedron. 64, 52, p. 11908-11916

    Research output: Contribution to journalArticle

  44. Published

    Thermal Rearrangement of Indolyl Oxime Esters to Pyridoindoles

    Portela Cubillo, F., Surgenor, B. A., Aitken, R. A. & Walton, J. C. 17 Oct 2008 In : Journal of Organic Chemistry. 73, 20, p. 8124-8127 4 p.

    Research output: Contribution to journalArticle

  45. Published

    Microwave-assisted syntheses of n-heterocycles using alkenone-, alkynone- and aryl-carbonyl O-phenyl oximes: Formal synthesis of neocryptolepine

    Portela-Cubillo, F., Scoto, J. S. & Walton, J. C. 18 Jul 2008 In : Journal of Organic Chemistry. 73, p. 5558-5565 8 p.

    Research output: Contribution to journalArticle

  46. Published

    2-(aminoaryl)alkanone O-phenyl oximes: versatile reagents for syntheses of quinazolines

    Portela-Cubillo, F., Scott, J. S. & Walton, J. C. 2008 In : Chemical Communications. 25, p. 2935-2937 3 p.

    Research output: Contribution to journalArticle

  47. Published

    From dioxime oxalates to dihydropyrroles and phenanthridines via iminyl radicals

    Portela-Cubillo, F., Scanlan, E. M., Scott, J. S. & Walton, J. C. 2008 In : Chemical Communications. 35, p. 4189-4191 3 p.

    Research output: Contribution to journalArticle

  48. 2007
  49. Published

    Characterization of equatorial and axial six-membered-ring peroxyl radicals

    DiLabio, G. A., Ingold, K. U. & Walton, J. C. 12 Oct 2007 In : Journal of Organic Chemistry. 72, 21, p. 8095-8098 4 p.

    Research output: Contribution to journalArticle

  50. Published
  51. Published
  52. Published

    Microwave-assisted preparations of dihydropyrroles from alkenone O-phenyl oximes

    Portela-Cubillo, F., Scott, J. S. & Walton, J. C. 2007 In : Chemical Communications. 39, p. 4041-4043 3 p.

    Research output: Contribution to journalArticle

  53. 2006
  54. Published

    Radical 4-exo-cyclizations onto O-alkyloxime acceptors: towards the synthesis of penicilliin-containing antibiotics

    Walton, J. C. & Scanlan, E. M. 2006 In : Helvetica Chimica Acta. 89, p. 2133-2143 11 p.

    Research output: Contribution to journalArticle

  55. Published

    Unusual radical cyclisations

    Walton, J. C. 2006 Radicals in Synthesis II. Gansäuer, A. (ed.). Springer, p. 163-200 (Topics in Current Chemistry; vol. 264)

    Research output: Chapter in Book/Report/Conference proceedingChapter

  56. 2005
  57. Published

    Evolution of Functional Cyclohexadiene-Based Synthetic Reagents: The Importance of Becoming Aromatic

    Walton, J. C. & Studer, A. Oct 2005 In : Accounts of Chemical Research. 38, 10, p. 794-802 9 p.

    Research output: Contribution to journalArticle

  58. Published

    Kinetic and theoretical study of 4-exo ring closures of carbamoyl radicals onto C=C and C=N bonds

    Walton, J. C., DiLabio, G. A. & Scanlan, E. S. 6 Jan 2005 In : Organic Letters. 7, 1, p. 155-158 4 p.

    Research output: Contribution to journalArticle

  59. Published

    Radical-carbanion cyclo-coupling in armed aromatics: overriding steric hindrance to ring closure

    Walton, J. C. & Roydhouse, M. D. 2005 In : Chemical Communications. p. 4453-4455 3 p.

    Research output: Contribution to journalArticle

  60. 2004
  61. Published

    Axial and equatorial cyclohexylacyl and tetrahydropyranyl-2-acyl radicals. An experimental and theoretical study

    DiLabio, G. A., Ingold, K. U., Roydhouse, M. D. & Walton, J. C. 11 Nov 2004 In : Organic Letters. 6, p. 4319-4322 4 p.

    Research output: Contribution to journalArticle

  62. Published

    Approach to 3-aminoindolin-2-ones via oxime ether functionalized carbamoylcyclohexadienes

    Bella, A. F., Slawin, A. M. Z. & Walton, J. C. 3 Sep 2004 In : Journal of Organic Chemistry. 69, p. 5926-5933 8 p.

    Research output: Contribution to journalArticle

  63. Published

    Bond dissociation enthalpies in Oximes: order restored

    Pratt, D. A., Blake, J. A., Mulder, P., Walton, J. C., Korth, H-G. & Ingold, K. U. 1 Sep 2004 In : Journal of the American Chemical Society. 126., p. 10667-10675 9 p.

    Research output: Contribution to journalArticle

  64. Published

    Thermolyses of O-phenyl oxime ethers. A new source of iminyl radicals and a new source of aryloxyl radicals

    Blake, J. A., Pratt, D. A., Lin, S., Walton, J. C., Mulder, P. & Ingold, K. U. 30 Apr 2004 In : Journal of Organic Chemistry. 69, p. 3112-3120 9 p.

    Research output: Contribution to journalArticle

  65. Published

    Alkanethioimidoyl radicals: evaluation of Β-scission rates and of cyclization onto S-alkenyl substituents

    Minozzi, M., Nanni, D. & Walton, J. C. 19 Mar 2004 In : Journal of Organic Chemistry. 69, 6, p. 2056-2069 14 p.

    Research output: Contribution to journalArticle

  66. Published
  67. Published

    Thermal decomposition of O-benzyl ketoximes; role of reverse radical disproportionation

    Blake, J. A., Ingold, K. U., Lin, S., Mulder, P., Pratt, D. A., Sheeller, B. & Walton, J. C. 7 Feb 2004

    Research output: Other contribution

  68. Published

    Preparation of β- and γ-lactams from carbamoyl radicals derived from oxime oxalate amides

    Scanlan, E. M., Slawin, A. M. Z. & Walton, J. C. Jan 2004 In : Organic & Biomolecular Chemistry. 2, 5, p. 716-724 9 p.

    Research output: Contribution to journalArticle

  69. Published
  70. 2003
  71. Published

    Electron transfer induced dissociations of 2- and 4-alkyl cyclohexadienones

    McCarroll, A., Crayston, J. A. & Walton, J. C. 9 Jun 2003 In : Tetrahedron. 59, 24, p. 4275-4280 6 p.

    Research output: Contribution to journalArticle

  72. Published

    Silylated Cyclohexadienes as New Radical Chain Reducing Reagents: Preparative and Mechanistic Aspects

    Studer, A., Amrein, S., Schleth, F., Schulte, T. & Walton, J. C. 14 May 2003 In : Journal of the American Chemical Society. 125, 19, p. 5726-5733 8 p.

    Research output: Contribution to journalArticle

  73. Published

    Radical ring closures of 4-isocyanato carbon-centered radicals

    Minin, P. L. & Walton, J. C. 4 Apr 2003 In : Journal of Organic Chemistry. 68, p. 2960-2963 4 p.

    Research output: Contribution to journalArticle

  74. Published
  75. 2002
  76. Published

    Incorporation of Molecular Species into the Vacancies of Perovskite Oxides

    Irvine, J. T. S., Corcoran, D. J. D., Lashtabeg, A. & Walton, J. C. Dec 2002 In : Solid State Ionics. 154-155, p. 447-453 7 p.

    Research output: Contribution to journalArticle

  77. Published
  78. Published

    An electron paramagnetic resonance study of intermediates generated from aromatic aldimines

    Nanni, D., Pareschi, P. & Walton, J. C. 2002 In : Journal of Chemical Society, Perkin Transactions 2. 6, p. 1098-1104 7 p.

    Research output: Contribution to journalArticle

  79. Published
  80. Published
  81. Published
  82. Published

    Preparation of oxime oxalate amides and their use in free-radical mediated syntheses of lactams

    Scanlan, E. M. & Walton, J. C. 2002 In : Chemical Communications. p. 2086-2087 2 p.

    Research output: Contribution to journalArticle

  83. 2001
  84. Published
  85. Published

    Organic syntheses through free-radical annulations and related cascade sequences

    McCarroll, A. J. & Walton, J. C. 2001 In : Journal of the Chemical Society, Perkin Transactions 1. 24, p. 3215-3229 15 p.

    Research output: Contribution to journalArticle

  86. Published

    Programming organic molecules: Design and management of organic syntheses through free-radical cascade processes

    McCarroll, A. J. & Walton, J. C. 2001 In : Angewandte Chemie International Edition. 40, 12, p. 2224-2248 24 p.

    Research output: Contribution to journalReview article

  87. Published
  88. 2000
  89. Published

    Inhibition of human platelet aggregation by a novel S-nitrosothiol is abolished by haemoglobin and red blood cells in vitro: implications for anti-thrombotic therapy

    Megson, I. L., Sogo, N., Mazzei, F. A., Butler, A. R., Walton, J. C. & Webb, D. J. Dec 2000 In : British Journal of Pharmacology. 131, p. 1391-1398 8 p.

    Research output: Contribution to journalArticle

  90. Published

    Conceptual and synthetic strategies for the preparation of organic magnets

    Crayston, J. A., Devine, J. N. & Walton, J. C. 29 Sep 2000 In : Tetrahedron. 56, p. 7829-7857 29 p.

    Research output: Contribution to journalArticle

  91. Published

    The influence of boryl substituents on the formation and reactivity of adjacent and vicinal free radical centers

    Walton, J. C., McCarroll, A. J., Chen, Q., Carboni, B. & 1, O. 14 Jun 2000 In : Journal of the American Chemical Society. 122, p. 5455-5463 9 p.

    Research output: Contribution to journalArticle

  92. Published

    Aberrant SRN1 reaction of 4-aminophenol with a,p-dinitrocumene: EPR observation of intermediates

    Scamehorn, R. G., Mahnke, L. A., Krause, R. D., Frey, B. L., Hendriksen, D. L., Jahn, K. S., Kultgen, S. G. & Walton, J. C. 23 Mar 2000

    Research output: Other contribution

  93. Published

    New insight into the mechanism of the reaction between a,b-unsaturated carbonyl compounds and triethylborane (Brown's Reaction),

    Beraud, V., Gnanou, Y., Walton, J. C. & Maillard, B. 19 Feb 2000 In : Tetrahedron Letters. 41, p. 1195-1198 4 p.

    Research output: Contribution to journalArticle

  94. Published

    Enhanced radical delivery from aldoxime esters for EPR and ring closure applications

    McCarroll, A. J. & Walton, J. C. 2000 In : Chemical Communications. p. 351-352 2 p.

    Research output: Contribution to journalArticle

  95. Published
  96. Published
  97. Published

    Photolytic and radical induced decompositions of O-alkyl aldoxime ethers

    McCarroll, A. J. & Walton, J. C. 2000 In : Journal of Chemical Society, Perkin Transactions 2. 9, p. 1868-1875 8 p.

    Research output: Contribution to journalArticle

  98. Published
  99. 1999
  100. Published

    The efficiency of alkyl radical generation and hydrogen transfer from 1-alkylcyclohexa-2,5-diene-1-carboxylic acids

    Jackson, L. V. & Walton, J. C. 17 Sep 1999 In : Tetrahedron Letters. 40, p. 7019-7021 3 p.

    Research output: Contribution to journalArticle

  101. Published

    Synthesis and design of potential polaronic ferromagnets

    Devine, J. N., Crayston, J. A. & Walton, J. C. Jun 1999 In : Synthetic Metals. 103, p. 2294-2295 2 p.

    Research output: Contribution to journalArticle

  102. Published
  103. Published
  104. 1998
  105. Published
  106. Published
  107. Published
  108. Published

    Homolytic Substitution: A Molecular Ménage à Trois

    Walton, J. C. Mar 1998 In : Accounts of Chemical Research. 31, p. 99-107 9 p.

    Research output: Contribution to journalArticle

  109. Published

    1- and 2-Adamantyl Radicals and Cations in the Gas Phase: Thermochemistry and Mass Spectrometry

    Aubry, C., Holmes, J. L. & Walton, J. C. 19 Feb 1998

    Research output: Other contribution

  110. Published

    Covalent Binding of Redox Active Centres to Preformed Regioregular Polythiophenes

    Iraqi, A., Crayston, J. A. & Walton, J. C. Jan 1998 In : Journal of Materials Chemistry. 8, p. 31-36 6 p.

    Research output: Contribution to journalArticle

  111. Published
  112. 1997
  113. Published

    Exploratory Study of Diazoketones as Spin Traps for Nitric Oxide

    Walton, J. C. & Park, J. S. B. Dec 1997 In : Journal of Chemical Society, Perkin Transactions 2. 12, p. 2585-3588

    Research output: Contribution to journalArticle

  114. Published

    Reactions of Nitric Oxide and Nitrogen Dioxide with Functionalised Alkenes and Dienes

    Park, J. S. B. & Walton, J. C. Dec 1997 In : Journal of Chemical Society, Perkin Transactions 2. 12, p. 2579-2583 5 p.

    Research output: Contribution to journalArticle

  115. Published
  116. Published

    Alkyl Radical Generation Using Cyclohexa-1,4-diene-3-carboxylates and 2,5-Dihydrofuran-2-carboxylates

    Binmore, G., Walton, J. C. & Cardellini, L. Apr 1997 In : Journal of Chemical Society, Perkin Transactions 2. 4, p. 757-762 6 p.

    Research output: Contribution to journalArticle

  117. Published

    Functionalization of poly(p-phenylenevinylene) polymers with pendant nitroxide groups

    Iraqi, A., Mlynski, A., Heard, A., Walton, J. C. & Crayston, J. A. Jan 1997 In : Synthetic Metals. 84, p. 333-334 2 p.

    Research output: Contribution to journalArticle

  118. Published

    Synthesis of Thiophene Substituted Ruthenium and Rhenium Bipyridyl Complexes

    Iraqi, A., Crayston, J. A., Morrison, J. & Walton, J. C. Jan 1997 In : Synthetic Metals. 84, p. 441-442 2 p.

    Research output: Contribution to journalArticle

  119. Published

    Synthesis of methacrylate and silicone polymers with pendant thiophene groups

    Iraqi, A., Irvin, A. M., Walton, J. C. & Crayston, J. A. Jan 1997 In : Synthetic Metals. 84, p. 377-378 2 p.

    Research output: Contribution to journalArticle

  120. Published

    Organic Radicals

    Walton, J. C. 1997 Espectroscopia de Resonancia Paramagnetica Electronica" ed T Rojo, L Lezama and J M Barandiarán, Servicio Editorial Universidad del Pais Vasco. p. 253-283

    Research output: Chapter in Book/Report/Conference proceedingChapter