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Polystyrene-supported Cr(VI) reagents: a new class of recyclable oxidising reagents

โœ Scribed by Shiney Abraham; P.K. Rajan; K. Sreekumar

Book ID
104425473
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
629 KB
Volume
34
Category
Article
ISSN
1381-5148

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โœฆ Synopsis

Polystyrene-supported isoxazolinium chromate and chlorochromate resins were prepared and developed as ~ recyclable reagents for oxidation of alcohols to carbonyl compounds. Divinylbenzene (DVB) and ethylene glycoldim thacrylate (EGDMA) crosslinked polystyrene resins (2%) were used as the macromolecular supports. These insoluble Cr( J I) reagents were found to be selective in carrying out oxidation reactions. EGDMA-crosslinked polystyrene-supported reagents showed higher reactivity in terms of functional group capacity, reaction time and product yield. The spent reagent can be recycled and reused without appreciable loss of reactivity.

๐Ÿ“œ SIMILAR VOLUMES

Polystyrene-Bound Dioxirane: a New Class
Polystyrene-Bound Dioxirane: a New Class of Recyclable Oxidising Reagent
โœ Shiney, Abraham; Rajan, P. K.; Sreekumar, K. ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 431 KB

Polystyrene-bound dioxirane containing a five-methylene spacer arm between the polymer matrix and reagent function has been prepared and investigated as a new class of recyclable oxidising reagent for various organic substrates. The new reagent was found to oxidise alkenes to epoxides, pyridines to