Browsing Faculty of Science by Title
Now showing items 2300-2319 of 2590
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Synthesis and reactivity of 2-thionoester pyrroles: a route to 2-formyl pyrroles
(RSC Advances, 2019)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
(Chemical Communications, 2018)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 dipyrrins bearing chirality adjacent to the conjugated skeleton - Electron-poor pyrroles exhibit dramatically reduced nucleophilicity
(2008-10)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)
(2012-08)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
(2010)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
(Canadian Journal of Chemistry, 2015)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 symmetric meso-H dipyrrin hydrobromides from 2-formyl pyrroles
(Synlett, 2014)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 ... -
Synthesis, Lithium Insertion and Thermal Stability of Si–Mo Alloys
(The Electrochemical Society, 2020-10-05)Li insertion was investigated in SixMo100−x (90 ≥ x ≥ 70, Δx = 10) alloys prepared by mechanical ball milling. X-ray diffraction (XRD) and quantitative phase analysis were used to analyze phase compositions of these Si–Mo ... -
Synthesis, properties and reactivity of BCl2 aza-BODIPY complexes and salts of the aza-dipyrrinato scaffold
(Royal Society of Chemistry, 2020-02-25)The synthesis and characterisation of the BCl2-chelated complexes of both archetypal aza-dipyrrin sub- types are presented. A stepwise halogen exchange, leading to a mixed-halide Cl–B–F intermediate, is implicated in the ... -
Synthetic prodigiosenes and the influence of C-ring substitution on DNA cleavage, transmembrane chloride transport and basicity
(2013)No abstract available. -
Synthetic studies toward the kempane diterpenes. Construction of a key tricyclic intermediate
(2005)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, ... -
Systematic Marine Conservation Planning in the Scotian Shelf Bioregion [Graduate Project].
(2015-11-23)The Scotian shelf bioregion constitutes an area of intense socio-economic activity. Key activities in the bioregion include fisheries, oil and gas, shipping, and aquaculture. However, Canada’s commitment to protect at least ... -
A systematic review of the socioeconomic outcomes of the European Union’s trade-based measure for seafood sustainability.
(2023-05-30)Abstract Seafood is one of the most internationally-traded food commodities, creating opportunities for importing countries to exert influences on exporting countries via the control of market access. Over the past ... -
Systems for sustainable agriculture: approaches, tradeoffs and needs
(Canadian Centre for Sustainable Agriculture, Saskatoon, Saskatchewan, 2001)All systems of agriculture practiced today can be seen as having a potential for improvement and contributing toward a more sustainable agriculture. The major differences in approach and in the types of services needed to ... -
An SZ-selected sample of the most massive galaxy clusters in the 2500-square-degree South Pole Telescope survey
(2011-01-06)The South Pole Telescope (SPT) is currently surveying 2500 deg^2 of the southern sky to detect massive galaxy clusters out to the epoch of their formation using the Sunyaev-Zel'dovich (SZ) effect. This paper presents a ...