Catalysis under Supercritical Conditions and Supported by Ionic Liquids

10 Catalysis Under Supercritical Conditions and Supported by Ionic Liquids [Pg.1362]

Earlier, no emphasis was given to homogeneous catalysis in supercritical fluids, albeit the technique per se is now well established in extraction technology (e. g., for coffee, tea, hops, spices, and natural flavors). Incorporated in homogeneous catalyst processes [58-60], supercritical conditions can dramatically change the solubility profile of solvents and the reactivity of certain chemicals. [Pg.1362]

A comprehensive review (1999) highlighted the enormous opportunities afforded by supercritical fluids (SCF) in organometallic catalysis (cf. Section 3.1.13) [106]. [Pg.1362]

With regard to organometallic reactivity, little is known on the various SCFs. Even carbon dioxide can be reactive if it inserts in M-H, M-R, M-OR, or M-NR2 bonds. In this case, SCCO2 can be used simultaneously as C, building block. [Pg.1362]

An impressive example of selectivity effects comes from olefin metathesis. A certain Ru-carbene catalyst strictly yields the ring-closure metathesis product in supercritical carbon dioxide at densities above 0.65 g mL (eq. (10)), while [Pg.1362]

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