Return to search

Chiral cation-directed asymmetric 5-endo-trig cyclizations

The primary objective of this research project was to develop a novel protocol for the synthesis of densely functionalized optically enriched indanes through a chiral cation directed 5-endo-trig ring closure. In chapter two, a convergent strategy for the construction of the cyclization precursors is reported, which employs two easily adapted fragments. In chapter three, a range of quaternary ammonium salts are screened to establish the optimal phase-transfer conditions for this system. A variety of substrates were evaluated to probe the scope and limitations of this methodology. Finally, two potential mechanistic pathways for this enigmatic process are outlined and discussed in chapter four.

Identiferoai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:581346
Date January 2013
CreatorsJohnston, Craig Paterson
ContributorsSmith, Martin D.
PublisherUniversity of Oxford
Source SetsEthos UK
Detected LanguageEnglish
TypeElectronic Thesis or Dissertation
Sourcehttp://ora.ox.ac.uk/objects/uuid:a21b6cb4-1b1b-48ab-9fc2-252916992598

Page generated in 0.0015 seconds