It has been shown, in general, that only one acetyl-benzoyl derivative of ortho aminophenols can be prepared, regardless of the order in which the acyl groups are introduced, and that in this product the benzoyl radical is always found attached to nitrogen. In the recent study of mixed diocyl derivatives of ortho aminophenols in which one of the radicals was the carboaryloxy group, attempts to determine the structure by means of hydrolysis with alkali caused the formation of a carbonylaminophenol
