Catalyst and process for oxidation of organic substrates by hydr

Details Catalyst and process for oxidation of organic substrates by hydr Catalyst and process for oxidation of organic substrates by hydr

1980-04-28

1981-08-25

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

2603435, 26034823, 26034831, 521 56, 521139, 521140, 521147, 560131, 560231, 562503, 562508, C08J 936

Patent

active

042860687

ABSTRACT:
A process for oxidizing organic substrates such as ketones and ethylenically unsaturated compounds. The substrate is contacted with aqueous hydrogen peroxide in a solution or in a two-phase liquid system, in the presence of a polymeric catalyst containing chemically bonded arsenic. This process can lead to lactones or hydroxy acids from cyclic ketones or to esters or mixtures of alcohol and carboxylic acid from open chain ketones. Unsaturated compounds afford epoxides and/or diols. Preparations of certain polymers substituted by arsenic groups, particularly from polystyrene, poly(vinylpyridine) and copolymers thereof, useful as catalysts in such oxidation process, are described. For example, polystyrene is brominated, bromine therein is replaced by lithium and the resulting lithiated polymer is converted into a polymer containing an arsenic group, such as arsono, --As(O)(OH).sub.2, as substituent group, by reaction with arsine triethoxide followed by oxidation and hydrolysis by aqueous hydrogen peroxide. The aromatic polymers, polyphenylene and polymers and copolymers of vinylpyridine, can be used similarly as the catalyst.

REFERENCES:
patent: 3993673 (1976-11-01), McMullen
patent: 4045493 (1977-08-01), Trevillyan
patent: 4098973 (1978-07-01), Smith
Talanta (1), vol. 17 of 1970, pp. 483-489.
Talanta (2), vol. 23 of 1976, pp. 590-593.
Angewandte Chemie, vol. 16 of 1977, pp. 493-558 (Int. Ed.).

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