Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557812
Title: The development of gold-catalysed indole cascade reactions
Author: Heffernan, Stephen
Awarding Body: University of Bath
Current Institution: University of Bath
Date of Award: 2012
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Abstract:
Divided into three distinct research areas, this thesis investigates the synthetic utility of enynones and ynamides towards the formation of biologically relevant structures. The first volume of work (Chapter 2) describes the gold-catalysed double alkylation of indole by enynones. The [6,5,7]-tricycles formed in this reaction are generally provided in excellent yield with complete regioselectivity. Optimisation of the procedure, a thorough substrate investigation, and mechanistic insights are discussed within. The gold-catalysed rearrangement of ynamido esters is described in Chapter 3. Following 1,3-acyl transfer, nucleophilic addition of indole to the intermediate allenamide provides a novel enamide scaffold. The substrate scope has been assessed, with high yields provided for most examples. The final chapter concerns the Ireland-Claisen rearrangement of ynamido esters, with post-rearrangement decarboxylation furnishing aminodienes. Following a substantial optimisation study, a range of ynamido esters were screened, providing a range of functionalised aminodienes in good yield with varying Z:E selectivity.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.557812  DOI: Not available
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