Browsing Chemistry Faculty Research, Publications and Presentations by Title

Now showing items 131-150 of 173

  • Synthesis and reactivity of 2-thionoester pyrroles: a route to 2-formyl pyrroles 

    Kim, Min Joon; Gaube, Sophie M.; Beh, Michael H. R.; Smith, Craig D.; Thompson, Alison. (2019). RSC Advances.
    2-Functionalised pyrroles exhibit considerable synthetic utility. Herein, the synthesis and reactivity of 2-thionoester (-C(S)OR) pyrroles is reported. 2-Thionoester pyrroles were synthesized using a Knorr-type approach ...

  • Synthesis and Reactivity of Aza-Dipyrrin Alkali Metal Salts 

    Synthesis and Reactivity of Aza-Dipyrrin Alkali Metal Salts. Diaz-Rodriguez, R.M.; Robertson, K.N.; Thompson, A. Chem. Commun. 2018, accepted, CC-COM-09-2018-007101.R1 (NSERC) DOI: 10.1039/C8CC07101B
    We report the lithium, sodium and potassium salts of aza-dipyrrins and detail their use as anionic aza-dipyrrinato ligand sources in complexation. Of the three types of alkali salts studied, those of lithium are found to ...

  • Synthesis of Cedranoid Sesquiterpenes .4. X-Ray Characterization of the endo-6-Hydroxy-endo-8-Methyl and exo-6-Hydroxy-exo-8-Methyl Isomers of Methyl 6-Hydroxy-4,4,8-Trimethyl-3-Oxo-Cis-Bicyclo[3.3.0]octane-1-Carboxylate 

    BURNELL, DJ, VJ FREER, RS GREWAL, PC HAYES, et al. 1988. "Synthesis of Cedranoid Sesquiterpenes .4. X-Ray Characterization of the endo-6-Hydroxy-endo-8-Methyl and exo-6-Hydroxy-exo-8-Methyl Isomers of Methyl 6-Hydroxy-4,4,8-Trimethyl-3-Oxo-Cis-Bicyclo[3.3.0]octane-1-Carboxylate." Acta Crystallographica Section C-Crystal Structure Communications 44: 296-300.
    No abstract available.

  • Synthesis of dipyrrins bearing chirality adjacent to the conjugated skeleton - Electron-poor pyrroles exhibit dramatically reduced nucleophilicity 

    Beshara, Cory S., Beth M. Pearce, and Alison Thompson. 2008. "Synthesis of dipyrrins bearing chirality adjacent to the conjugated skeleton - Electron-poor pyrroles exhibit dramatically reduced nucleophilicity." Canadian Journal of Chemistry-Revue Canadienne De Chimie 86(10): 951-957.
    With the aim of furthering our investigations into the asymmetric complexation of dipyrrinato ligands, a dipyrrin bearing a stereogenic centre directly adjacent to the conjugated skeleton was synthesized. The electron- ...

  • Synthesis of heteroleptic pyrrolide/bipyridyl complexes of ruthenium(II) 

    Lundrigan, Travis, Carla L. M. Jackson, Md Imam Uddin, Lloyd A. Tucker, et al. 2012. "Synthesis of heteroleptic pyrrolide/bipyridyl complexes of ruthenium(II)." Canadian Journal of Chemistry-Revue Canadienne De Chimie 90(8): 693-700.
    The synthesis and characterization of the first heteroleptic pyrrolide/2,2'-bipyridyl complexes of ruthenium(II) are reported. Pyrroles substituted at the 2-position with X = O functionality react with Ru(bipy)(2)Cl-2.2H(2)O ...

  • Synthesis of natural products containing the pyrrolic ring 

    Young, Ian S., Paul D. Thornton, and Alison Thompson. 2010. "Synthesis of natural products containing the pyrrolic ring." Natural Product Reports 27(12): 1801-1839.
    This review provides an overview of the synthetic chemistry that has been utilised to prepare natural products containing a pyrrolic ring.

  • Synthesis of Prodigiosene-Estrogen Conjugates: optimization of protecting group strategies and anticancer properties 

    Marchal, E., Uddin, M. I., Hawco, C. L., & Thompson, A. (2015). Synthesis of prodigiosene–estrogen conjugates: optimization of protecting group strategies and anticancer properties. Canadian Journal of Chemistry, 93(5), 526-535. https://doi.org/10.1139/cjc-2014-0516
    The tripyrrolic prodigiosene skeleton was conjugated to several estrogen ligands. The conjugation was achieved via an ester linker that proved to be unusually sensitive to hydrolysis during synthesis. This work describes ...

  • Synthesis of sulfenyl dipyrroles via reaction of a-free pyrroles with thionyl chloride 

    Beh, Michael H. R.; Smith, Craig D.; Robertson, Katherine N.; and Thompson, Alison. (2020). Synthesis of sulfenyl dipyrroles via reaction of a-free pyrroles with thionyl chloride. Canadian Journal of Chemistry,

  • Synthesis of symmetric meso-H dipyrrin hydrobromides from 2-formyl pyrroles 

    Lund, K. L. A., & Thompson, A. (2014). Synthesis of Symmetric meso-H-Dipyrrin Hydrobromides from 2-Formylpyrroles. Synlett, 25(08), 1142-1144. DOI: 10.1055/s-0033-1341066
    The reaction of 2-formyl pyrroles in acidic methanol gives the corresponding symmetric, meso-H 4,6-dipyrrin hydrobromides. This convenient strategy involves initial deformylation under the acidic conditions, followed by ...

  • Synthetic prodigiosenes and the influence of C-ring substitution on DNA cleavage, transmembrane chloride transport and basicity 

    Rastogi, Soumya, Estelle Marchal, Imam Uddin, Brandon Groves, et al. 2013. "Synthetic prodigiosenes and the influence of C-ring substitution on DNA cleavage, transmembrane chloride transport and basicity." Organic & Biomolecular Chemistry 11(23): 3834-3845.
    No abstract available.

  • Synthetic studies toward the kempane diterpenes. Construction of a key tricyclic intermediate 

    Bao, GL, L. Zhao, and DJ Burnell. 2005. "Synthetic studies toward the kempane diterpenes. Construction of a key tricyclic intermediate." Organic & Biomolecular Chemistry 3(19): 3576-3584.
    A synthetic sequence is described for construction of the tricyclic portion (35) of kempane diterpenes. The central stereochemistry was established by a Diels-Alder addition of 2,6-dimethyl-para-benzoquinone to a 5-membered, ...

  • Tailoring the local structure and electronic property of AuPd nanoparticles by selecting capping molecules. 

    Liu, Feng, and Peng Zhang. 2010. "Tailoring the local structure and electronic property of AuPd nanoparticles by selecting capping molecules.." Applied Physics Letters 96(4): 0431051-043105/3.
    No abstract available.

  • Technique for determination of accurate heat capacities of volatile, powdered, or air-sensitive samples using relaxation calorimetry 

    Marriott, Robert A., Maria Stancescu, Catherine A. Kennedy, and Mary Anne White. 2006. "Technique for determination of accurate heat capacities of volatile, powdered, or air-sensitive samples using relaxation calorimetry." Review of Scientific Instruments 77(9): 096108-096108.
    We introduce a four-step technique for the accurate determination of the heat capacity of volatile or air-sensitive samples using relaxation calorimetry. The samples are encapsulated in a hermetically sealed differential ...

  • Temperature dependence of thermal conductivity enhancement in single-walled carbon nanotube/polystyrene composites 

    Jakubinek, Michael B., Mary Anne White, Minfang Mu, and Karen I. Winey. 2010. "Temperature dependence of thermal conductivity enhancement in single-walled carbon nanotube/polystyrene composites." Applied Physics Letters 96(8): 083105-083105.
    The thermal conductivity of single-walled carbon nanotube (SWCNT)/polystyrene composites, prepared by a method known to produce a uniform distribution of SWCNT bundles on the micrometer length scale, was measured in the ...

  • Temperature dependent lattice misfit and coherency of Al3X (X = Sc, Zr, Ti and Nb) particles in an Al matrix 

    Saumitra Saha, T.Z. Todorova, J.W. Zwanziger, Temperature dependent lattice misfit and coherency of Al3X (X = Sc, Zr, Ti and Nb) particles in an Al matrix, Acta Materialia, Volume 89, 1 May 2015, Pages 109-115, ISSN 1359-6454, http://dx.doi.org/10.1016/j.actamat.2015.02.004
    The lattice coherency and critical radii for Al3X precipitates in an aluminum matrix were computed using first-principles methods. From density functional perturbation theory and the quasi-harmonic approximation, the unit ...

  • Theoretical Descriptors of Electrides 

    Dale, Stephen; and Johnson, Erin. (2018). Theoretical Descriptors of Electrides. The Journal of Physical Chemistry, A 122, 9371-9391. https://doi.org/10.1021/acs.jpca.8b08548

  • Thermal and Diffraction Studies of Phase-Transitions in the Incommensurate Compound [P(Ch3)(4)]2CuCl4 

    BEDNARZ, G., MA WHITE, MR PRESSPRICH, and RD WILLETT. 1994. "Thermal and Diffraction Studies of Phase-Transitions in the Incommensurate Compound [P(Ch3)(4)]2CuCl4." Physical Review B 49(2): 832-837. Copyright © 1994 American Physical Society.
    Calorimetric and x-ray-diffraction studies of the commensurate

  • Thermal and lattice dynamical properties of Na8Si46 clathrate 

    Qiu, LY, MA White, ZQ Li, JS Tse, et al. 2001. "Thermal and lattice dynamical properties of Na8Si46 clathrate." Physical Review B 64(2): 024303-024303. Copyright © 2001 American Physical Society.
    The experimental heat capacity of Na8Si46 has been determined from 35-300 K, and its lattice parameters have been measured over the range 100-330 K. The experimental heat capacity and the thermal-expansion coefficient ...

  • Thermal conductivities of a clathrate with and without guest molecules. 

    Zakrzewski, Marek, and Mary Anne White. 1992. "Thermal conductivities of a clathrate with and without guest molecules.." Physical Review B: Condensed Matter and Materials Physics 45(6): 2809-2817. Copyright © 1992 American Physical Society.
    The thermal conductivities of Dianin's compd. [4-(p-hydroxyphenyl)-2,2,4-trimethylchroman] and its ethanol adduct in the temp. range 20-250 K are reported. This clathrate has the same stable structure both with and without ...

  • Thermal conductivity of (Er1-xYx)(2)Ti2O7 pyrochlore oxide solid solutions 

    Bryan, Craig, Catherine A. Whitman, Michel B. Johnson, John F. Niven, et al. 2012. "Thermal conductivity of (Er1-xYx)(2)Ti2O7 pyrochlore oxide solid solutions." Physical Review B 86(5): 054303-054303. Copyright © 2012 American Physical Society.
    The thermal conductivities of pyrochlore oxide solid solutions of general formula (Er1-xYx)(2)Ti2O7 with 0 <= x <= 1 have been determined for high-quality single crystals aligned along the [110] direction, over the ...