| 摘要 |
<p>1. A process for the preparation of N-phosphonomethylglycine of the formula I see diagramm : EP0081459,P6,F1 by reacting aminomethanephosphonic acid of the formula II see diagramm : EP0081459,P6,F2 with glyoxal of the formula III OHC-CHO which process comprises carrying out the reaction in an aqueous medium, in the presence of sulfur dioxide, and isolating the resultant product.</p> |
