Abstract

Allylic oxidation remains a reaction of considerable value in organic synthesis. Oxidation reactions in this section are divided into two types: reactions which produce allylic alcohols (equation 1) and those which produce α,β-unsaturated aldehydes or ketones directly (equation 2). Examples from the recent literature fall approximately equally into each type. Examples of allylic oxidations which occur with rearrangement (equation 3 and 4) or give mixtures are discussed individually within each reagent type; however, it is fair to say that many reagents and reaction conditions can give either direct oxidation or oxidative rearrangement, and almost no allylic oxidation system exclusively gives one course of reaction in all cases. In many examples the course of oxidation depends mostly upon substrate structure.

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