ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Several reactions involving crosslinked polymers, a solid, and a liquid phase were investigated. Witting reactions between crosslinked polymers (1 and 5) contaning phosphonium salt residues, solid potassium carbonate, and aldehydes in tetrahydrofuran were found to proceed satisfactorily, even in the absence of a phase transfer catalyst. The Oxidation of 2-phenyl-1,2-propanediol in methylene chloride by solid sodium periodate (but not postassium periodate) is catalysed by the periodate form (9a) of an anion exchange resin. The reaction of 1-bromooctane in benzene, tetrahydrofuran, or acetonitrile with potassium cyanide or sodium cyanide and of benzyl bromide in tetrahydrofuran or acetonitrile with potassium acetate or sodium acetate are catalysed only slightly, if at all, by the cyanide or acetate forms (9e and 9f) of an anion exchange resin. Crosslinked polymers containing crown ether residues catalyse the reaction of 1-bromooctane in toluene with sodium iodide. It is not clear how the crosslinked polymers and solid reagents manage to react with each other, but possible mechanisms are discussed. The importance of carrying out control reactions in such studies is stressed.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1984.021850307
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