Dr. Julian M. Dust

B.Sc. (Hons.) Waterloo, M.Sc. Dalhousie, Ph.D. Queen's at Kingston

Associate Professor, Environmental Science (Chemistry) Unit, Sir Wilfred Grenfell College, Memorial University of Newfoundland, Corner Brook, Newfoundland, Canada A2H 6P9

Office: AS251
Phone: (709)-637-6200, ext 6330
E-Mail: jdust@swgc.mun.ca

Other affiliations:.Visiting Researcher, Queen's University at Kingston, Department of Chemistry, laboratory of Professor Erwin Buncel, Kingston, Ontario, Canada; Invited Book reviewer - ChemWeb (The Alchemist, web magazine).

Professional Organizations: Chemical Institute of Canada (Member), Canadian Society for Chemistry (Member).

Personal Interests:

Reading science fiction, gardening, listening to opera.

Scholarly Interests:

Dr. Dust is a Physical Organic chemist. His over forty-five publications include reports on aspects of the free radical chemistry of sterically-hindered aromatic compounds (work directed by Prof. Ross Barclay at Mount Allison University), substituent effects on benzyl radicals (work supervised by Prof. Don Arnold at Dalhousie University that defined the sigma dot alpha scale of radical stability), regioselectivity of the SNAr2 mechanism of nucleophilic aromatic displacement and the nature of Meisenheimer complexes formed by ambidentate polynitroheteroaromatic compounds (i.e. super-electrophiles), in collaboration with Prof. Erwin Buncel at Queen's University at Kingston and, more recently, in collaboration with Prof. François Terrier of Université de Versailles, St-Quentin en Yvelines, France.

Recent research has involved the physical organic chemistry (kinetic, spectroscopic and product studies) of water-soluble polymers, including the reactions of poly(ethylene glycols) end-substituted with electron-deficient moieties and on the uses of poly(ethylene glycol)s [PEGs] and related water-soluble polymers in environmental monitoring and chemoremediation. Other projects in Environmental Organic Chemistry involve the abiotic rearrangement of trichlorfon and the decomposition of its product, dichlorvos as well as collaboration with the Buncel Group and Prof. Gary van Loon's Group (Queen's) on the mechanistic plurality of nucleophilic attack on the organophosphorus insecticide, fenitrothion, and on the reactions of the herbicide, trifluralin, with sulfite and hydroxide anions.

These environmental chemistry research interests are reflected in the Survey of Environmental Chemistry (Envs 2261), Industrial Chemistry (Envs 3260), and Environmental Organic Chemistry (Envs 4249) courses as well as the Introductory Organic Chemistry (Chem 2400/2401) and Introductory Chemistry (Chem 1810/1200/1001) courses that Dr. Dust has taught.

Selected Papers:

E. Buncel, N.L. Mailloux, R.S. Brown, P.M. Kazmaier, and J. Dust, "Synthesis and Characterization of [3,3]- and [3,4]-perinophane." Tetrahedron Letters, 42, 3559-3563 (2001).

V.K. Balakrishnan, G.W. van Loon, J.M. Dust, and E. Buncel, "Catalytic Pathways in the Ethanolysis of Fenitrothion, an Organophosphorus Pesticide. A Dichotomy in the Behaviour of Complexing Agents." Canadian Journal of Chemistry, 79, 157-173 (2001).

J.M. Dust and C.S. Warren, "Kinetics and Activation Parameters for the Alkaline Aqueous Rearrangement of Tricholofon [O,O-dimethyl-(2,2,2-trichloro-1-hydroxyethyl)phosphonate] to Dichlorvos [O,O-dimethyl-O-(2,2-dichloroethenyl)phosphate]. Water Quality Research Journal of Canada, 36, 589-604 (2001).

E. Buncel and J.M. Dust, Carbanion chemistry: Structures and mechanisms. American Chemical Society, Washington, D.C. (ISBN: 0841235562; July 2001). In Press.

J.M. Dust and R.A. Manderville, "Carbon versus oxygen nucleophilic selectivity in the reaction of the aryloxide ions, 2,6- and 3,5- di-tert-butyl phenoxides with the 2-(nitro)x aryl-4,6-dinitrobenzotriazole 1-oxide series of super-electrophiles. Steroelectronic factors on C-7 Meisenheimer complex formation versus C-1' SNAr displacement." Canadian Journal of Chemistry 76, 662 (1998).

E. Buncel, R.A. Manderville, and J.M. Dust, "Ambident reactivity of aryloxide ions towards the super-electrophile, 4,6-dinitrobenzofuroxan. Kinetics, thermodynamics and stereoelectronic factors on regioselectivity." Journal of the Chemical Society, Perkin Transactions 2, 1019 (1997).

E. Buncel, J.M. Dust and R.A. Manderville, "Ambident reactivity of enolate ions towards 1,3,5-trinitrobenzene. The first observation of an oxygen-bonded enolate Meisenheimer complex." Journal of the American Chemical Society 118, 6072 (1996).

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Updated 25 September 2001.