期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1006, 期 1-2, 页码 241-249出版社
ELSEVIER
DOI: 10.1016/S0021-9673(03)00556-9
关键词
catalysts; monolithic polymer/carrier microreactor; polymer-supported reagents; Horner-Emmons olefination; Suzuki cross-coupling reaction
In this work new polymer/carrier composites are described which serve as novel materials in flow-through reactors for polymer-supported organic solution-phase synthesis. Monolithic polymer/carrier columns are prepared by a new precipitation polymerization process inside the void pore volume of megaporous glass carrier materials. Chemical functionalization of the internal polymer phase with chlorosulfonic acid or trimethylamine generates small, interconnected ion-exchange resin beads with a diameter of 1-3 mum which can be used for a large variety of organic syntheses. These monolithic rods are incorporated into an appropriate casing and can conveniently be operated in the flow-through mode. Important successful applications are polymer-assisted solution-phase reductions, oxidations and Homer-Emmons olefinations. Additionally, the use of these monolithic columns as catalytic microreactors and their performance in selected reactions are described. (C) 2003 Elsevier B.V. All rights reserved.
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