StyreneDivinylbenzene Copolymers

Analytical conditions A solid-phase extraction silica cartridge is used to separate the nonpolar components by elution with petroleum ether diethyl ether (90 10) and the polar components with diethyl ether. The polar components are resolved by HPSEC on 2 columns in series of highly cross-hnked styrenedivinylbenzene copolymers, using tetrahydrofuran as mobile phase and a refractive index detector. 

A mthenium(ni) salen complex anchored to a chloromethylated styrenedivinylbenzene copolymer (see Figure 8) was reported, to be 75 times as active as the homogeneous analogue in the aerobic oxidation of benzyl alcohol. However, recycling of the catalyst led to a 35% loss in activity due to facile leaching of the mthenium. Moreover, we note that it is highly unlikely that the oxidation sensitive salen ligand survives the reaction conditions. 

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