http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Reusable, recoverable, polymeric supports
xii, 128 leaves : illustrations ; 28 cm.
Copolymers of N-isopropylacrylamide (NIPAM) with N-acryloxysuccinimide (NASI) exhibit inverse temperature dependent solubility in water. Catalysts bound to these polymers can be recovered by heating the aqueous solution or by adding brine. Catalysts prepared include phosphine-ligated transition metal catalysts that are active in alkene hydrogenation and covalently that are active in alkene hydrogenation and covalently hydrolysis. NMR studies have shown that substrate activity on such supports can be equivalent to that of low molecular weight analogs if a sufficiently long chain is used to attach the species in question to PNIPAM. Poly(fluoroacrylates) are exclusively soluble in fluorocarbon solvents. The complete immiscibility of fluorocarbon solvents with water and common organic solvents suggests their utility in biphasic syntheses and catalyses, where the polymer bound reagent or catalyst can be recovered simply by separation of the two phases. The synthesis of cuprous phase soluble supports that readily bind amine-terminated reagents that are utilized in biphasic syntheses and catalyses is described.
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Includes bibliographical references: pages 118-126.