An europium(III) complex as an efficient catalyst for the Michael reaction of α,β-enones with ketene silyl acetals: LIS-NMR analysis for the transition state through complexation between europium(III) catalyst and enones

Masahiro Terada, Takeshi Nakai, Koichi Mikami

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The europium(III) complex, Eu(dppm)3, is found to be an efficient catalyst for the Michael reactions of α, β- enones with ketene silyl acetals. The high level of erythro selectivity obtained in the reaction of tert-butyl (E)- propenyl ketones (2c) with (E)-1-tert-butoxy-1-[(trimethylsilyl)oxy]propene (3d) is rationalized on the basis of the LIS-NMR analysis of the europium(III) catalyst/enone 2c complex.

Original languageEnglish
Pages (from-to)377-380
Number of pages4
JournalInorganica Chimica Acta
Volume222
Issue number1-2
DOIs
Publication statusPublished - 1994 Jan 1
Externally publishedYes

Keywords

  • Catalysis
  • Europium complexes
  • Lanthanide shift reagent
  • Michael reaction

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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