| 摘要 |
A process for the production of N-phosphonomethylglycine characterised in that it comprises:… (a) reacting a 1,3,5-tricarboalkoxymethylhexahydro-1,3,5-triazine corresponding to the following general formula: …<CHEM>… wherein R represents an aliphatic or aromatic group; with an acyl chloride corresponding to the following general formula: ……R<1>-@-X… wherein X represents chlorine, bromine or iodine: and R<1> represents an aliphatic or aromatic group; to form the N-carboalkoxymethyl-N-halomethyl amide of the acyl chloride corresponding to the following general formula: …<CHEM>… wherein X, R and R<1> are as defined above;… (b) reacting the resulting amide with a phosphite corresponding to the following general formula: …<CHEM>… wherein R<2> and R<3> both represent aromatic groups or both represent aliphatic groups; and R<4> represents an aliphatic group or an alkali metal; to form a phosphonate compound corresponding to the following general formula: …<CHEM>… wherein, R, R<1>, R<2> and R<3> are as defined above; and… (c) hydrolyzing the resulting phosphonate to yield N-phosphonomethylglycine is disclosed. …<??>The present invention provides advantages over the prior art. |
