Cyclic nitrones. Part II. The oxidation of cyclic nitrones by iron(III) chloride

Abstract
2-Unsubstituted 1-pyrroline 1-oxides are rapidly oxidised by iron(III) chloride solutions to yield hydroxamic acids, whilst 2-substituted 1-pyrroline 1-oxides are much more difficult to oxidise. Cyclic hydroxylamines are oxidised as readily as the 1-pyrroline 1-oxides and also yield hydroxamic acids.

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