A new catalytic process for allyl ester cleavage has been developed by using a robust cationic CpRu(IV) π-allyl complex of 2-quinolinecarboxylic acid that can be stored for over six months in air without any loss of catalytic activity. The deprotection of various alcohols and acids can be attained simply with high reactivity and chemoselectivity under mild conditions. Furthermore, with continuous removal
A Magnetically Separable Heterogeneous Deallylation Catalyst: [CpRu(η<sup>3</sup>-C<sub>3</sub>H<sub>5</sub>)(2-pyridinecarboxylato)]PF<sub>6</sub>Complex Supported on a Ferromagnetic Microsize Particle Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>
The highly reactive and chemoselective homogeneousdeallylation catalyst CpRu(η3-C3H5)(4-substituted-2-pyridinecarboxylato) was immobilized on microsize spherical Fe3O4@SiO2 particles. The resultant heterogeneouscatalyst 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