Journal of the Chemical Society. Perkin transactions I p. 2970 - 2973 (1981)
Update date:2022-08-11
Topics:
Gupta, Dharmendra N.
Hodge, Philip
Davies, J. Eric
No reaction occurred when solutions of 2,5-di-t-butylhydroquinone, dibenzyl sulphide, trans-cyclohexane-1,2-diol or hydrazobenzene in methylene chloride were stirred with powdered sodium metaperiodate at 20 deg C for several hours.However, these and several closely related substrates were oxidized in good yield, generally within a few hours, when solutions in methylene chloride, and in some cases benzene or ether, were stirred with sodium metaperiodate supported on silica gel.The supported reagent was prepared by evaporating to dryness an aqueous solution of sodium metaperiodate in the presence of silica gel, followed by heating at 120 deg C in vacuo.The reagent appears to consist mainly of a monomolecular layer of sodium metaperiodate bound to the silica gel by the surface hydroxy-groups, together with a minor amount of crystalline anhydrous sodium metaperiodate.
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