Iminium ion catalysis: tools and observations

Brazier, John B. and Platts, Jamie A. and Tomkinson, Nicholas C. O. (2009) Iminium ion catalysis: tools and observations. In: UNSPECIFIED.

Abstract

In recent years the identification of new transformations and modes of reaction for iminium ion catalysis has attracted much interest, but the majority of reports have not looked at understanding the often complex processes taking place within the reaction flask. We have sought to understand these reactions and to test the validity of computational models. Iminium ion catalysts can be used to accelerate a variety of cycloaddn. and conjugate addn. processes. The accepted catalytic cycles do not help in explaining important observations, particularly regarding reaction medium. Through exptl. and theor. investigations we have focussed on three principle observations for the Diels-Alder cycloaddn.: - Water increases the rate of reactions. - Water increases the e.e. of the isolated products. - Theor. models for the conformations of the active species do not agree. We present evidence offering insights into the crucial roles of water within these transformations.

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• Item metadata

  Item type:	Conference or Workshop Item(Other)
  ID code:	34165
  Dates:	Date Event 2009 Published
  Notes:	CAPLUS AN 2009:985209(Conference; Meeting Abstract; Computer Optical Disk)
  Subjects:	Science > Chemistry
  Department:	Faculty of Science > Pure and Applied Chemistry
  Depositing user:	Pure Administrator
  Date deposited:	11 Nov 2011 16:06
  Last modified:	09 Apr 2024 05:36
  Related URLs:	Event
  URI:	https://strathprints.strath.ac.uk/id/eprint/34165