Reactivity enhancement for chiral dirhodium(II) tetrakis(carboxamidates)

MP Doyle, WH Hu, IM Phillips, CJ Moody, AG Pepper, Alexandra Martha Zoya Slawin

Research output: Other contribution

36 Citations (Scopus)

Abstract

Difluorinated Ligands from azetidinone-4-carboxylates and pyrrolidinone-5-carboxylate have been prepared, substituted onto dirhodium(II), and the reactivities and selectivities of the resulting catalysts have been examined. The fluorinated catalysts exhibit enhanced reactivity towards diazo decomposition but diminished enantioselectivities for cyclopropanation. Selectivity for ylide formation and rearrangement or Si-H insertion is enhanced or similar to that with unfluorinated analogues.

Original languageEnglish
Volume343
Publication statusPublished - Jan 2001

Keywords

  • chiral catalysts
  • fluorinated ligands
  • cyclopropanation
  • ylides
  • rhodium
  • CARBENOID INSERTION
  • IODONIUM YLIDES
  • CYCLOPROPANATION
  • LACTAM
  • ENANTIOCONTROL
  • IMINE

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