Preparation and Properties of Fluorenylidenephosphines Bearing an Electron-Donating Substituent, 2-Alkoxy-4,6-di-t-butylphenyl (Ia) or 2-(Alkoxymethyl)-4,6-di-t-butylphenyl (Ib).

Preparation and properties of fluorenyli

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 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 226 KB

Fluorenylidenephosphines having a 2,4-di-t-butyl-6-methoxyphenyl, 2,4-di-t-butyl-6-(methoxymethyl)phenyl or 2,4-dit-butyl-6-(phenoxymethyl)phenyl group were prepared. 31 P NMR chemical shifts of the fluorenylidenephosphines indicated that electron-donating effects through space are not so strong bet