Quantum mechanical investigation of the effect of catalyst fluorination in the intermolecular asymmetric Stetter reaction

J Am Chem Soc. 2011 Jul 27;133(29):11249-54. doi: 10.1021/ja202444g. Epub 2011 Jul 6.

Abstract

The asymmetric intermolecular Stetter reaction was investigated using the B3LYP and M06-2X functionals. Fluorination of a triazolium bicyclic catalyst had been found to significantly influence reaction yields and enantiomeric ratios. Computations indicate that the improved reactivity of the fluorinated catalyst is due to better electrostatic interactions between the nitroalkene and catalyst. Computational investigations of preferred conformations of the ground state catalyst and acyl anion equivalent, and the transition structures leading to both enantiomers of the products, are reported.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Alkenes / chemistry*
  • Halogenation*
  • Models, Molecular
  • Nitro Compounds / chemistry*
  • Quantum Theory
  • Stereoisomerism
  • Triazoles / chemistry*

Substances

  • Alkenes
  • Nitro Compounds
  • Triazoles