Of aromatic aldehydes to phenols

Figure 3.42 Dakin reaction of aromatic aldehydes to phenols in the presence of alkaline hydrogen peroxide.

The oxidation of aromatic aldehydes to phenols via the aryl formates is known as the Dakin reaction and is evidently related to the Baeyer-Villiger oxidation of ketones. The use of MCPBA is well known [45]. The successful use of MMPP and UHP-acetic anhydride in these reactions (Eqs. 34 to 36) can be achieved with aromatic aldehydes that have an electron releasing substituent in an ortho- or para-position. In the absence of a suitable electron releasing substituent, aromatic aldehydes are oxidised to the corresponding carboxylic acid. 

In a variation of the Bayer Villiger reaction, known as the Dakin reaction, the oxidation of aromatic aldehydes to phenols is accomplished via aryl formate... 

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