How is Dimethyl phenylphosphonate (CAS: 2240-41-7) typically synthesized?

Dimethyl phenylphosphonate (CAS: 2240-41-7) is typically synthesized through the reaction of phenyl phosphonic acid with dimethylamine. Commonly, this process involves treating phenyl phosphonic acid with excess dimethylamine in an aprotic solvent like dichloromethane. The reaction yields a mixture that is purified by distillation to obtain the pure compound. The process requires attention to temperature control and the use of appropriate catalysts to achieve high selectivity and yield.