The Elbs persulfate oxidation is the organic reaction of phenols with alkaline potassium persulfate to form para-diphenols.[1] The reaction is generally performed in water at room temperatures or below, using equimolar quantities of reagents.
The reaction is disadvantaged by moderate to low chemical yields with recovery of starting material and complete consumption of the persulfate.[4] It is suggested that the phenol in many cases is a catalyst converting the persulfate into a sulfate. Despite this, the Elbs reaction remains generally useful in a research setting, as it is simple to perform and is tolerant of a wide range of other functional groups, which are not oxidised under these conditions.[4]
