Premium
A Magnetically Separable Heterogeneous Deallylation Catalyst: [CpRu(η 3 ‐C 3 H 5 )(2‐pyridinecarboxylato)]PF 6 Complex Supported on a Ferromagnetic Microsize Particle Fe 3 O 4 @SiO 2
Author(s) -
Hirakawa Takuya,
Tanaka Shinji,
Usuki Naoki,
Kanzaki Hisao,
Kishimoto Mikio,
Kitamura Masato
Publication year - 2009
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200801166
Subject(s) - catalysis , chemistry , reactivity (psychology) , coercivity , ferromagnetism , ether , heterogeneous catalysis , styrene , magnetic separation , inorganic chemistry , nuclear chemistry , organic chemistry , materials science , physics , metallurgy , medicine , alternative medicine , pathology , condensed matter physics , polymer , quantum mechanics , copolymer
The highly reactive and chemoselective homogeneousdeallylation catalyst CpRu(η 3 ‐C 3 H 5 )(4‐substituted‐2‐pyridinecarboxylato) was immobilized on microsize spherical Fe 3 O 4 @SiO 2 particles. The resultant heterogeneous catalyst displays high saturation magnetization, weak coercive forces and high levels of dispersibility. The catalyst has increased the utility of deallylation by allowing the reaction to be conducted without extra additives. The only co‐product of the reaction is a volatile allyl ether compound. Here, we demonstrate the efficient deallylation and separation of highly polar multifunctional compounds as well as multiple rounds of catalyst recycling without significant loss of reactivity. The usefulness of this catalyst has been confirmed by the synthesis of a triribonucleotide 3–5 U. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)