Richard Vaughan Williams Professor

academic article

• The Role of Strain in the Homoaromatization of Semibullvalenes.  Journal of Organic Chemistry.  82.0:4136.0-4147.0. 2017
• 4,6-Barbaralanedicarboxy-2,8-dicarboxylic anhydride and 1,5-dimethyl-4,6semibullvalenedicarboxy-2,8-dicarboxylic anhydride: examples of unusual barbaralanes and semibullvalenes that do not undergo the Cope rearrangement. They are locked as the closed tautomers.  Journal of Physical Organic Chemistry.  30.0. 2017
• Writing reaction mechanisms: the use of site-specific curly arrows as an aid to comprehension.  Canadian Journal of Chemistry.  95:334-339. 2017
• An investigation of the observed, but counter-intuitive, stereoselectivity noted during chiral amine synthesis via N-chiral-ketimines.  Beilstein Journal of Organic Chemistry.  9:2103-2112. 2013
• Experimental Verification of the Homoaromaticity of 1,3,5-Cycloheptatriene and Evaluation of the Aromaticity of Tropone and the Tropylium Cation by Use of the Dimethyldihydropyrene Probe.  Journal of the American Chemical Society.  134:16742-16752. 2012
• An experimental estimate of the relative aromaticity of the cyclooctatetraene dianion by fusion to dimethyldihydropyrene.  Chemical Communications.  48:8144-8146. 2012
• The Experimental Realization of a Neutral Homoaromatic Carbocycle.  Chemistry-A European Journal.  17:9193-9199. 2011
• Calculation Driven Synthesis of an Excellent Dihydropyrene Negative Photochrome and its Photochemical Properties.  Journal of the American Chemical Society.  133:4040-4045. 2011
• Historical Influences of Volcanism and Glaciation in Shaping Mitochondrial DNA Variation and Distribution in Yellowstone Cutthroat Trout across Its Native Range.  Transactions of the American Fisheries Society.  140:91-107. 2011
• Measuring Aromaticity with the Dimethyldihydropyrene Ring Current Probe. Experimental and Computational Studies of the Fulvenes and the Strongly Antiaromatic Cyclopentadienone Reveal Large Mills-Nixon-Type Bond Localization Effects. Synthesis of Fulvene-Fused Dihydropyrenes.  Journal of the American Chemical Society.  131:189-199. 2009
• Suppressing the thermal metacyclophanediene to dihydropyrene isomerization: Synthesis and rearrangement of 8,16-dicyano[2.2]metacyclophane-1,9-diene and evidence supporting the proposed biradicaloid mechanism.  Journal of Organic Chemistry.  73:451-456. 2008
• Theoretical studies on graphyne substructures: Geometry, aromaticity, and electronic properties of the multiply fused dehydrobenzo[12]annulenes.  Journal of Organic Chemistry.  72:1437-1442. 2007
• Synthesis and properties of trefoil-shaped tris(hexadehydrotribenzo[12] annulene) and tris(tetradehydrotribenzo[12]annulene).  Organic Letters.  8:2933-2936. 2006
• Experimental and theoretical study of stabilization of delocalized forms of semibullvalenes and barbaralanes by dipolar and polarizable solvents. Observation of a delocalized structure that is lower in free energy than the localized form.  Journal of Organic Chemistry.  70:3437-3449. 2005
• How important is bishomoaromatic stabilization in determining the relative barrier heights for the degenerate cope rearrangements of semibullvalene, barbaralane, bullvalene, and dihydrobullvalene?.  Journal of Organic Chemistry.  70:2627-2632. 2005
• 13-methyl-2,6-dithia[7]metacyclophane: A useful molecule to connect VT NMR results and structure with calculations.  Journal of Organic Chemistry.  70:675-680. 2005
• A DFT study of the thermal, orbital symmetry forbidden, cyclophanediene to dihydropyrene electrocyclic reaction. Predictions to improve the dimethyldihydropyrene photoswitches.  Journal of the American Chemical Society.  127:16207-16214. 2005
• Pyramidalized olefins: A DFT study of bicyclo[2.1.1]-, -[3.2.1]-, and -[3.2.2]alkenes and their fused derivatives. Two rare examples of pi-facially symmetric pyramidal olefins.  Journal of Organic Chemistry.  69:7134-7142. 2004
• Pyramidalized olefins: A DFT study of the homosesquinorbornene and sesquibicyclo[2.2.2]octene nuclei.  Journal of Organic Chemistry.  68:9186-9190. 2003
• Gas-phase electron-diffraction investigation and quantum-chemical calculations of the structure of 1,5-dimethylsemibuilvalene-2,4,6,8-tetracarboxylic dianhydride.  Helvetica Chimica Acta.  86:1741-1752. 2003
• Diatropicity of 3,4,7,8,9,10,13,14-octadehydro[14]annulenes: A combined experimental and theoretical investigation.  Journal of Organic Chemistry.  67:8812-8819. 2002
• Dimethyldihydropyrene-dehydrobenzoannulene hybrids: Studies in aromaticity and photoisomerization.  Journal of Organic Chemistry.  67:8798-8811. 2002
• N,N-difluorotris(tert-butyl)silylamine - The first organosilyl difluoroamine. Synthesis and computational studies.  Journal of Organic Chemistry.  67:8435-8439. 2002
• A theoretical and experimental scale of aromaticity. The first nucleus-independent chemical shifts (NICS) study of the dimethyldihydropyrene nucleus.  Journal of the American Chemical Society.  124:13495-13505. 2002
• B3LYP calculations on bishomoaromaticity in substituted semibullvalenes.  Journal of Computational Chemistry.  22:1565-1573. 2001
• Lifting of the degeneracy in semibullvalenes by remote and direct substituents: A quantitative study using variable-temperature carbon-13 NMR spectroscopy.  Journal of Organic Chemistry.  66:1949-1960. 2001
• Semibullvalenes and related molecules: Ever closer approaches to neutral homoaromaticity.  European Journal of Organic Chemistry.  227-235. 2001
• Exceptionally pyramidalized olefins: A theoretical study of the cyclopropenyl fused tricycles tricyclo[3.2.1.0(2,4)]oct-2(4)-ene, tricyclo[3.2.1.0(2,4)]octa-2(4),6-diene, tricyclo[3.2.2.0(2,4)]non-2(4)-ene, and tricyclo[3.2.2.0(2,4)]nona-2(4),6-diene.  Journal of Organic Chemistry.  65:562-567. 2000
• Qualitative analysis in the beginning organic laboratory.  Journal of Chemical Education.  76:1117-1120. 1999
• Pyramidalized olefins: The stereospecific conjugate reduction of a bicyclo[2.2.2]octadiene.  Tetrahedron Letters.  40:2689-2690. 1999
• The search for homoaromatic semibullvalenes. 6. X-ray structure and charge density studies of 1,5-dimethyl-2,4,6,8-semibullvalenetetracarboxylic dianhydride in the temperature range 123-15 K.  Journal of Organic Chemistry.  64:1180-1190. 1999
• The search for homoaromatic semibullvalenes. 5. 1,5-dimethyl-2,4,6,8-semibullvalenetetracarboxylic dianhydride.  Journal of Organic Chemistry.  63:3302-3309. 1998
• Pyramidalized olefins: Ab initio study and X-ray structure determination of bicyclo[2.2.2]octadienes.  Journal of Organic Chemistry.  63:5268-5271. 1998
• Theoretical study and X-ray structure determination of dimethyldihydropyrene.  Journal of Organic Chemistry.  63:3125-3127. 1998
• Annelated semibullvalenes: A theoretical study of how they ''cope'' with strain.  Journal of the American Chemical Society.  119:5921-5929. 1997
• Unexpected stereoselectivity in the Weiss-Cook condensation of dimethyl 1,3-acetonedicarboxylate with pentane-2,3-dione.  Journal of the Chemical Society-Perkin Transactions 1.  1425-1428. 1997
• endo- and exo-stereochemistry in the Diels-Alder reaction: Kinetic versus thermodynamic control.  Journal of Chemical Education.  74:582-585. 1997
• 1,5-Dimethyl-2,4,6,8-semibullvalenetetracarboxylic dianhydride: A close approach to a neutral homoaromatic semibullvalene.  Journal of the American Chemical Society.  118:4208-4209. 1996
• 1-Benzenesulfonyl-2-Trimethylsilylacetylene: A New Acetylene Equivalent For The Diels-Alder Reaction.  Journal of the Chemical Society-Chemical Communications.  1739-1740. 1994
• A Theoretical Investigation Of Through-Space Interactions .III. A Semiempirical Study Of The Cope Rearrangement In Singly Annellated Semibullvalenes.  Journal of the Chemical Society-Perkin Transactions 2.  147-150. 1994
• Unusual Stereoselectivity In The Diels-Alder Addition Of Cyclopentadiene With The Bicyclo[2.2.2]Octene Nucleus.  Journal of Organic Chemistry.  58:6740-6744. 1993
• New Allene Equivalents For The Diels-Alder Reaction: Vinyl Sulfoxide Cycloadditions.  Journal of the Chemical Society-Chemical Communications.  1672-1673. 1991