| 摘要 |
<p>In accordance with the present invention, an aralkyl halide and a trialkyl phosphite are brought into contact with each other in a reactor at a temperature below about 50°C to form a reaction mixture. The reaction mixture is then refluxed in the reactor to produce the aralkyl dialkyl phosphonate and an alkyl halide, at least a portion of which can be effectively separated from the aralkyl dialkyl phosphonate during refluxing. The aralkyl dialkyl phosphonate can be recovered as a bottoms product after removal of unreacted reactants and/or unwanted by-products are removed as overhead products via low-pressure distillation. The method allows for the preparation of aralkyl dialkyl phosphonates in high yield, without the need for solvents and/or catalysts and at relatively low reaction temperatures.</p> |
