Electrophilic Catalysis in the Synthesis of Aryl Methyl- and Phenylphosphonochloridates

The reaction of methyl- and phenylphosphonic dichlorides with phenols in the presence of anhydrous magnesium chloride as catalyst or magnesium metal as precatalyst provides a simple, efficient, and practical method of synthesis of the corresponding aryl methyl- and phenylphosphonochloridates.