ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Synthesis of peracid-type resins (PAR) by oxidation of carboxylic acid-type ion exchangers with H2O2 in sulfonic and sulfuric acid media has been studied. Influence of composition of the resins and acid concentration of the media on the conversion of carboxylic to percarboxylic acid groups in the resins is discussed. PAR can oxidize various organic compounds in good conversion. It is especially noteworthy that the increase in the polarity of the solvent increased the rate constants in the epoxidation of cyclohexene with PAR, in contrast with the low molecular weight peracids, and the epoxidation of 1-olefins, geometric isomers of cyclododecene, and cholesterol with PAR took place selectively with regard to chain length or steric configuration. The results are discussed on the basis of distribution effect, protective effect with polymer, steric interactions between overall molecule of the substrates and polymer matrix, and other factors.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1975.070190616
Permalink