ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Crosslinked polymers containing sulfinyl groups were prepared by free-radical terpolymerization of p-methylsulfinylstyrene, styrene, and divinylbenzene. These polymers serve as phasetransfer catalysts for the reaction of 1-bromooctane with sodium iodide in toluene-water system. The catalytic reaction is affected by some experimental parameters, such as stirring speed, particle size, degree of crosslinking, and solvent. The catalytic activity also depends strongly on copolymer composition, which causes differences in the adsorption of alkali metal ions and in the microenvironment around the active site. On the basis of the results of reactions of benzyl bromide with phenoxide, and of an alkyl methanesulfonate with sodium halides, it is evident that phase-transfer reactions catalyzed by insoluble polymeric sulfoxides take place in the organic phase where a small amount of water exists. Furthermore, these polymers work as catalysts even in the absence of water.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1989.021900908
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