Selective transformation of tricyclic peroxides with pronounced antischistosomal activity into 2-hydroxy-1,5-diketones using iron (II) saltsстатья
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Аннотация:The present work deals with selective transformations of peroxides into organic compounds via the cleavage of the O-O bond using variable valence metals. A selective transformation of tricyclic peroxides promoted by Fe2+ salts was discovered. This selective transformation is unexpected for compounds with structural features which allow diverse decomposition pathways. 2-Hydroxy-1,5-diketones are prepared in yields up to 92% in the reactions of tricyclic peroxides with FeSO4, Fe(ClO4)(2), or FeCl2. This is a new preparative method for the synthesis of 1,5-diketones. 2-Hydroxy-1,5-diketones in CDCl3 at 25 degrees C exist mainly in the open-chain form of the hydroxyketone over the cyclic hemiacetal. The results of this work can be of interest to understand the mechanism of the antiparasitic action of peroxides. (C) 2016 Elsevier Ltd. All rights reserved.