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Relevant bibliographies by topics / Synthesis of alkyne complexes

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Dissertations / Theses

Academic literature on the topic 'Synthesis of alkyne complexes'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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Dissertations / Theses on the topic "Synthesis of alkyne complexes"

1

Wexler, Pamela Andrea. "Synthesis and reactivity of tantalum and tungsten alkyne complexes: Models for alkyne cyclization." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185228.

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Intermediates in the cyclization reaction of alkynes have been isolated using the group 5 tantalum phenoxide reagents, Ta(DIPP)₂Cl₃(OEt₂) and Ta(DIPP)₃Cl₂(OEt₂) (DIPP = O-2,6-C₆H₃-i-Pr₂). The extent of cyclization has been effected by controlling the sterics at the metal center or the alkyne itself. Reducing the less congested bis phenoxide complex, Ta(DIPP)₂Cl₃(OEt₂), by two electrons in the presence of 2-butyne or 3-hexyne allowed the isolation of an arene complex, (C₆R₆)Ta(DIPP)₂Cl (R = Me, Et), which is formally classified as a 7-metallanorbornadiene. This complex can also be reduced by on

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2

Helps, I. M. "The synthesis of plant growth regulators via alkyne hexacarbonyldicobalt complexes." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381126.

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3

Fryatt, Ross. "Heterobimetallic alkyne complexes and their use in asymmetric organic synthesis." Thesis, Loughborough University, 2004. https://dspace.lboro.ac.uk/2134/34925.

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This thesis describes the use of heterobimetallic alkyne complexes in asymmetric organic synthetic pathways. Unlike previous protocols in the literature, the source of chiral control is due to the inherent chirality of the heterobimetallic core and not from an external source. A new method for the preparation of Co(CO)3MoCp(CO)2-alkyne complexes has been addressed with a view to a more rapid and cleaner preparation of these complexes, adapting previously known literature methodology. Preparation of diastereomerically-enriched alcohol complexes has also been attempted.

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4

Poulton, Andrew Michael. "Investigation into the uses of bimetallic alkyne complexes in organic synthesis." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/34566.

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This thesis describes the use of both heterobimetallic and novel desymmetrised homobimetallic metal alkyne complexes in organic chemistry. A range of novel desymmetrised Co2(CO)5IPr-alkyne complexes have been synthesised and their reactivity investigated. This resulted in a highly diastereoselective thermal Pauson–Khand reaction. Previous protocols in the literature have had to use N-oxide promoters to achieve diastereoselectivity on desymmetrised bis-cobalt cores. The use of substituted dihydrofurans as cyclopropane surrogates for the formation of novel homobimetallic 1,3-dipoles has been rea

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5

Armstrong, Elaine M. "The synthesis and reactions of molybdenum(II) and tungsten(II) alkyne complexes." Thesis, Bangor University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314395.

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6

Flower, Kevin R. "The synthesis and reactions of some new cationic alkyne complexes of tungsten(II)." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236744.

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7

Fletcher, Anthony James. "Preparation and synthetic use of heterobimetallic alkyne complexes." Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/35938.

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This thesis describes the use of heterobimetallic alkyne complexes for use in an efficient stereoselective variant of the Pauson-Khand reaction. Unlike previous protocols found in the literature the source of chiral control upon cyclisation arises solely from the inherently chiral CoMoC2 core of these complexes and not from an external source. The inherently chiral Co(CO)3MoCp(CO)2- and desymmetrised Co2(CO)5(PPh3)-alkyne complexes were utilised as efficient chiral auxiliaries for nucleophilic additions to remote centres of complexed propargylic aldehydes to form secondary propargyl alcohols w

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8

Parker, Kyle Daniel James. "The synthesis and reactivity of tantalum diamidophosphine complexes featuring an activated alkyne unit." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/47058.

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A series of tantalum complexes supported by the diamidophosphine ligand [PhNPN*] were synthesized using Ta(alkyne)Cl₃(DME), Ta(V) reagents that feature a reduced alkyne unit: [PhNPN*]Ta(3-hexyne)X, and [PhNPN*]Ta(BTA)X (X = Cl, H, alkyl, N₃; BTA = bis(trimethylsilyl)acetylene). For these complexes, the bonding and reactivity at tantalum is best understood as a combination of both the high-valent ‘Ta(V)-alkenediyl’ and low-valent ‘Ta(III)-alkyne’ structural formalisms. The synthesis and reactivity of a series of Ta imide complexes, generated via the displacement of the alkyne ligand with an ar

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9

Kataoka, Yasutaka. "Generation and Synthetic Applications of Niobium-and Tantalum-Alkyne Complexes." Kyoto University, 1992. http://hdl.handle.net/2433/74593.

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10

Harris, Michael C. J. "Synthetic application of zirconocene #eta#'2-imine and #eta#'2-alkyne complexes." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295637.

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