| 摘要 |
A method for the production of N-phosphonomethylglycine is disclosed which comprises the steps of: (1) first reacting 2,5-diketopiperazine with p-formaldehyde, then adding substituted phosphorus compound, all in the presence of a low molecular weight carboxylic acid solvent, to form an intermediate bis-phosphonomethyl-2,5-diketopiperazine compound, (2) isolating said intermediate compound, (3) subsequently reacting said intermediate bis-phosphonomethyl-2,5-diketopiperazine compound with a hydrolyzing agent; and, (4) thereafter acidifying said reactants with a mineral acid to form the end product, N-phosphonomethylglycine. |
