Preparation and properties of fluorenylidenephosphines bearing an electron-donating substituent, 2-alkoxy-4,6-di-t-butylphenyl or 2-(alkoxymethyl)-4,6-di-t-butylphenyl

Kozo Toyota, Subaru Kawasaki, Masaaki Yoshifuji

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Fluorenylidenephosphines having a 2,4-di-t-butyl-6-methoxyphenyl, 2,4-di-t-butyl-6-(methoxymethyl)phenyl or 2,4-di-t-butyl-6-(phenoxymethyl)phenyl group were prepared. 31P NMR chemical shifts of the fluorenylidenephosphines indicated that electron-donating effects through space are not so strong between the alkoxy group and the double-bonded phosphorus atom. The structure of a tungsten carbonyl complex of [2,4-di-t-butyl-6-(phenoxymethyl)phenyl](fluorenylidene)phosphine was analyzed by X-ray crystallography.

Original languageEnglish
Pages (from-to)7953-7959
Number of pages7
JournalTetrahedron Letters
Volume43
Issue number44
DOIs
Publication statusPublished - 2002 Oct 28

Keywords

  • Donors
  • Phosphaalkenes
  • Phosphorus compounds
  • Steric effects

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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